Ricardo Sierra

Ricardo Sierra

Mexico

Mexican, my biggest dream is to become a succesful entrepeneur!

14,920

Total Points

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170 Achievements

  • Achievement

    Introducing Fragments

    Android Fragments

    Achieved

    Jan 7, 2018

    Introducing Fragments
  • Achievement

    Functions in Swift 2.0

    Swift 2.0 Functions

    Achieved

    Nov 8, 2016

    Functions in Swift 2.0
  • Achievement

    Control Flow with Conditional Statements

    Swift 2.0 Collections and Control Flow

    Achieved

    Nov 7, 2016

    Control Flow with Conditional Statements
  • Achievement

    Control Flow With Loops

    Swift 2.0 Collections and Control Flow

    Achieved

    Oct 27, 2016

    Control Flow With Loops
  • Achievement

    Swift Dictionaries

    Swift 2.0 Collections and Control Flow

    Achieved

    Oct 27, 2016

    Swift Dictionaries
  • Achievement

    Introduction to Collections

    Swift 2.0 Collections and Control Flow

    Achieved

    Oct 27, 2016

    Introduction to Collections
  • Achievement

    Swift Operators

    Swift 2.0 Basics

    Achieved

    Oct 27, 2016

    Swift Operators
  • Achievement

    Swift Types

    Swift 2.0 Basics

    Achieved

    Oct 27, 2016

    Swift Types
  • Achievement

    An Introduction to Swift Programming

    Swift 2.0 Basics

    Achieved

    Oct 26, 2016

    An Introduction to Swift Programming
  • Achievement

    Basic Android Programming

    Build a Simple Android App

    Achieved

    Sep 12, 2016

    Basic Android Programming
  • Achievement

    Creating the Screen Layout

    Build a Simple Android App

    Achieved

    Sep 12, 2016

    Creating the Screen Layout
  • Achievement

    API Protection

    Flask REST API

    Achieved

    May 17, 2016

    API Protection
  • Achievement

    Resourceful Blueprints

    Flask REST API

    Achieved

    May 15, 2016

    Resourceful Blueprints
  • Achievement

    Getting Started with Android

    Build a Simple Android App

    Achieved

    May 10, 2016

    Getting Started with Android
  • Achievement

    Broadcasting

    Build a Social Network with Flask

    Achieved

    Apr 29, 2016

    Broadcasting
  • Achievement

    Takin' Names

    Build a Social Network with Flask

    Achieved

    Mar 31, 2016

    Takin' Names
  • Achievement

    What a View

    Django Basics

    Achieved

    Mar 29, 2016

    What a View
  • Achievement

    Say Hello to Django

    Django Basics

    Achieved

    Mar 29, 2016

    Say Hello to Django
  • Achievement

    Getting the REST You Need

    REST API Basics

    Achieved

    Mar 28, 2016

    Getting the REST You Need
  • Achievement

    Making Strong Users

    Build a Social Network with Flask

    Achieved

    Mar 15, 2016

    Making Strong Users
  • Achievement

    Gettin' CRUD-y With It

    Using Databases in Python

    Achieved

    Mar 15, 2016

    Gettin' CRUD-y With It
  • Achievement

    Our Diary App

    Using Databases in Python

    Achieved

    Mar 14, 2016

    Our Diary App
  • Achievement

    Meet Peewee

    Using Databases in Python

    Achieved

    Mar 14, 2016

    Meet Peewee
  • Achievement

    Reading Data from Databases with SQL

    Database Foundations

    Achieved

    Feb 29, 2016

    Reading Data from Databases with SQL
  • Achievement

    Installing MySQL Server and MySQL Workbench

    Database Foundations

    Achieved

    Feb 29, 2016

    Installing MySQL Server and MySQL Workbench
  • Achievement

    Introduction to Data, Databases and SQL

    Database Foundations

    Achieved

    Feb 26, 2016

    Introduction to Data, Databases and SQL
  • Achievement

    Character Builder

    Flask Basics

    Achieved

    Feb 26, 2016

    Character Builder
  • Achievement

    Flask Templates

    Flask Basics

    Achieved

    Feb 25, 2016

    Flask Templates
  • Achievement

    Welcome to Flask

    Flask Basics

    Achieved

    Feb 24, 2016

    Welcome to Flask
  • Achievement

    Buggy Logs

    Write Better Python

    Achieved

    Feb 22, 2016

    Buggy Logs
  • Achievement

    Cleaner Code

    Write Better Python

    Achieved

    Feb 22, 2016

    Cleaner Code
  • Achievement

    Hack-n-Slash

    Object-Oriented Python (retired)

    Achieved

    Feb 22, 2016

    Hack-n-Slash
  • Achievement

    Python Inheritance

    Object-Oriented Python (retired)

    Achieved

    Feb 21, 2016

    Python Inheritance
  • Achievement

    Python Objects

    Object-Oriented Python (retired)

    Achieved

    Feb 21, 2016

    Python Objects
  • Achievement

    Dungeon Game

    Python Collections (Retired)

    Achieved

    Feb 21, 2016

    Dungeon Game
  • Achievement

    Tuples

    Python Collections (Retired)

    Achieved

    Feb 21, 2016

    Tuples
  • Achievement

    Dictionaries

    Python Collections (Retired)

    Achieved

    Feb 20, 2016

    Dictionaries
  • Achievement

    Slices

    Python Collections (Retired)

    Achieved

    Feb 16, 2016

    Slices
  • Achievement

    Lists Redux

    Python Collections (Retired)

    Achieved

    Feb 11, 2016

    Lists Redux
  • Achievement

    Letter Game App

    Python Basics (2015)

    Achieved

    Feb 5, 2016

    Letter Game App
  • Achievement

    Number Game App

    Python Basics (2015)

    Achieved

    Jan 25, 2016

    Number Game App
  • Achievement

    Shopping List App

    Python Basics (2015)

    Achieved

    Jan 25, 2016

    Shopping List App
  • Achievement

    Logic in Python

    Python Basics (2015)

    Achieved

    Jan 12, 2016

    Logic in Python
  • Achievement

    Python Data Types

    Python Basics (2015)

    Achieved

    Jan 10, 2016

    Python Data Types
  • Achievement

    Python For Beginners

    Python Basics (2015)

    Achieved

    Jan 6, 2016

    Python For Beginners
  • Achievement

    Build and Share a Unity Game

    How to Make a Video Game

    Achieved

    Sep 24, 2015

    Build and Share a Unity Game
  • Achievement

    Game Audio

    How to Make a Video Game

    Achieved

    Sep 23, 2015

    Game Audio
  • Achievement

    Score, Enemies, and Game State

    How to Make a Video Game

    Achieved

    Sep 22, 2015

    Score, Enemies, and Game State
  • Achievement

    Pickups

    How to Make a Video Game

    Achieved

    Sep 18, 2015

    Pickups
  • Achievement

    Player Input and Cameras

    How to Make a Video Game

    Achieved

    Sep 17, 2015

    Player Input and Cameras
  • Achievement

    The Unity Editor and Scene Setup

    How to Make a Video Game

    Achieved

    Sep 10, 2015

    The Unity Editor and Scene Setup
  • Achievement

    Introduction to Video Games

    How to Make a Video Game

    Achieved

    Sep 7, 2015

    Introduction to Video Games
  • Achievement

    Relating Users in Parse.com

    Build a Self-Destructing Message Android App

    Achieved

    Jun 21, 2015

    Relating Users in Parse.com
  • Achievement

    Using Fragments for Tabs

    Build a Self-Destructing Message Android App

    Achieved

    Jun 20, 2015

    Using Fragments for Tabs
  • Achievement

    Adding Users Using Parse.com

    Build a Self-Destructing Message Android App

    Achieved

    Jun 19, 2015

    Adding Users Using Parse.com
  • Achievement

    Starting the App

    Build a Self-Destructing Message Android App

    Achieved

    Jun 16, 2015

    Starting the App
  • Achievement

    Say Hello to Python

    Python Basics (Retired)

    Achieved

    Jun 14, 2015

    Say Hello to Python
  • Achievement

    Acting on List Item Taps

    Android Lists and Adapters (2015)

    Achieved

    Jun 13, 2015

    Acting on List Item Taps
  • Achievement

    Lists with RecyclerViews

    Android Lists and Adapters (2015)

    Achieved

    Jun 9, 2015

    Lists with RecyclerViews
  • Achievement

    Using Parcelable Data

    Android Lists and Adapters (2015)

    Achieved

    Jun 8, 2015

    Using Parcelable Data
  • Achievement

    Custom ListViews

    Android Lists and Adapters (2015)

    Achieved

    Jun 4, 2015

    Custom ListViews
  • Achievement

    Standard ListViews

    Android Lists and Adapters (2015)

    Achieved

    May 27, 2015

    Standard ListViews
  • Achievement

    WWW

    How the Web Works

    Achieved

    May 9, 2015

    WWW
  • Achievement

    Updating the Data Model

    Android Lists and Adapters (2015)

    Achieved

    May 9, 2015

    Updating the Data Model
  • Achievement

    Hooking up the Model to the View

    Build a Weather App (2015)

    Achieved

    Apr 30, 2015

    Hooking up the Model to the View
  • Achievement

    Building the Weather UI

    Build a Weather App (2015)

    Achieved

    Apr 30, 2015

    Building the Weather UI
  • Achievement

    Working with JSON

    Build a Weather App (2015)

    Achieved

    Apr 26, 2015

    Working with JSON
  • Achievement

    Concurrency and Error Handling

    Build a Weather App (2015)

    Achieved

    Apr 26, 2015

    Concurrency and Error Handling
  • Achievement

    Delivering the MVP

    Java Objects (Retired)

    Achieved

    Apr 26, 2015

    Delivering the MVP
  • Achievement

    Creating the MVP

    Java Objects (Retired)

    Achieved

    Apr 21, 2015

    Creating the MVP
  • Achievement

    Harnessing the Power of Objects

    Java Objects (Retired)

    Achieved

    Apr 20, 2015

    Harnessing the Power of Objects
  • Achievement

    Meet Objects

    Java Objects (Retired)

    Achieved

    Apr 19, 2015

    Meet Objects
  • Achievement

    Perfecting the Prototype

    Java Basics

    Achieved

    Apr 19, 2015

    Perfecting the Prototype
  • Achievement

    Using your New Tools

    Java Basics

    Achieved

    Apr 19, 2015

    Using your New Tools
  • Achievement

    Getting Started with Java

    Java Basics

    Achieved

    Apr 17, 2015

    Getting Started with Java
  • Achievement

    Networking

    Build a Weather App (2015)

    Achieved

    Apr 10, 2015

    Networking
  • Achievement

    Exploring an API

    Build a Weather App (2015)

    Achieved

    Apr 10, 2015

    Exploring an API
  • Achievement

    Publishing on Google Play

    Publish an Android App

    Achieved

    Apr 9, 2015

    Publishing on Google Play
  • Achievement

    Finishing the User Interface

    Build an Interactive Story App (Retired)

    Achieved

    Apr 9, 2015

    Finishing the User Interface
  • Achievement

    The Model-View-Controller Pattern

    Build an Interactive Story App (Retired)

    Achieved

    Apr 8, 2015

    The Model-View-Controller Pattern
  • Achievement

    Intents and Multiple Activities

    Build an Interactive Story App (Retired)

    Achieved

    Apr 8, 2015

    Intents and Multiple Activities
  • Achievement

    User Input

    Build an Interactive Story App (Retired)

    Achieved

    Apr 8, 2015

    User Input
  • Achievement

    Testing and Debugging

    Build a Simple Android App (2014)

    Achieved

    Apr 6, 2015

    Testing and Debugging
  • Achievement

    Improving Our Code

    Build a Simple Android App (2014)

    Achieved

    Apr 6, 2015

    Improving Our Code
  • Achievement

    Coding the Fun Facts

    Build a Simple Android App (2014)

    Achieved

    Apr 6, 2015

    Coding the Fun Facts
  • Achievement

    Basic Android Programming

    Build a Simple Android App (2014)

    Achieved

    Apr 6, 2015

    Basic Android Programming
  • Achievement

    Creating the Initial Screen Layout

    Build a Simple Android App (2014)

    Achieved

    Apr 6, 2015

    Creating the Initial Screen Layout
  • Achievement

    Getting Started with Android

    Build a Simple Android App (2014)

    Achieved

    Apr 5, 2015

    Getting Started with Android
  • Achievement

    Chrome DevTools Basics

    Website Optimization

    Achieved

    Apr 2, 2015

    Chrome DevTools Basics
  • Achievement

    Web Apps

    Accessibility

    Achieved

    Mar 31, 2015

    Web Apps
  • Achievement

    Websites

    Accessibility

    Achieved

    Mar 29, 2015

    Websites
  • Achievement

    Introduction

    Accessibility

    Achieved

    Mar 29, 2015

    Introduction
  • Achievement

    Responsive Patterns

    Responsive Layouts

    Achieved

    Mar 28, 2015

    Responsive Patterns
  • Achievement

    Media Queries

    Responsive Layouts

    Achieved

    Mar 27, 2015

    Media Queries
  • Achievement

    Responsive Theory

    Responsive Layouts

    Achieved

    Mar 27, 2015

    Responsive Theory
  • Achievement

    AJAX and APIs

    AJAX Basics (retiring)

    Achieved

    Mar 26, 2015

    AJAX and APIs
  • Achievement

    jQuery and AJAX

    AJAX Basics (retiring)

    Achieved

    Mar 20, 2015

    jQuery and AJAX
  • Achievement

    Programming AJAX

    AJAX Basics (retiring)

    Achieved

    Mar 10, 2015

    Programming AJAX
  • Achievement

    AJAX Concepts

    AJAX Basics (retiring)

    Achieved

    Mar 9, 2015

    AJAX Concepts
  • Achievement

    Custom Media Players

    HTML Video and Audio (Retired)

    Achieved

    Mar 6, 2015

    Custom Media Players
  • Achievement

    Captioning Video

    HTML Video and Audio (Retired)

    Achieved

    Mar 4, 2015

    Captioning Video
  • Achievement

    Media Basics

    HTML Video and Audio (Retired)

    Achieved

    Mar 4, 2015

    Media Basics
  • Achievement

    Traversing and Manipulating the DOM with JavaScript

    Interactive Web Pages with JavaScript

    Achieved

    Mar 4, 2015

    Traversing and Manipulating the DOM with JavaScript
  • Achievement

    Selecting Elements and Adding Events with JavaScript

    Interactive Web Pages with JavaScript

    Achieved

    Mar 3, 2015

    Selecting Elements and Adding Events with JavaScript
  • Achievement

    JavaScript and the DOM

    Interactive Web Pages with JavaScript

    Achieved

    Mar 2, 2015

    JavaScript and the DOM
  • Achievement

    Creating a Simple Drawing Application

    jQuery Basics (2014)

    Achieved

    Mar 2, 2015

    Creating a Simple Drawing Application
  • Achievement

    Creating a Password Confirmation Form

    jQuery Basics (2014)

    Achieved

    Feb 28, 2015

    Creating a Password Confirmation Form
  • Achievement

    Creating a Mobile Drop Down Menu

    jQuery Basics (2014)

    Achieved

    Feb 27, 2015

    Creating a Mobile Drop Down Menu
  • Achievement

    Creating a Simple Lightbox

    jQuery Basics (2014)

    Achieved

    Feb 26, 2015

    Creating a Simple Lightbox
  • Achievement

    Creating a Spoiler Revealer

    jQuery Basics (2014)

    Achieved

    Feb 26, 2015

    Creating a Spoiler Revealer
  • Achievement

    Introduction to jQuery

    jQuery Basics (2014)

    Achieved

    Feb 25, 2015

    Introduction to jQuery
  • Achievement

    JavaScript Objects

    JavaScript Loops, Arrays and Objects

    Achieved

    Feb 22, 2015

    JavaScript Objects
  • Achievement

    JavaScript Arrays

    JavaScript Loops, Arrays and Objects

    Achieved

    Feb 16, 2015

    JavaScript Arrays
  • Achievement

    JavaScript Loops

    JavaScript Loops, Arrays and Objects

    Achieved

    Feb 13, 2015

    JavaScript Loops
  • Achievement

    JavaScript Functions

    JavaScript Basics (Retired)

    Achieved

    Feb 11, 2015

    JavaScript Functions
  • Achievement

    JavaScript Conditional Statements

    JavaScript Basics (Retired)

    Achieved

    Feb 8, 2015

    JavaScript Conditional Statements
  • Achievement

    JavaScript Numbers

    JavaScript Basics (Retired)

    Achieved

    Feb 6, 2015

    JavaScript Numbers
  • Achievement

    JavaScript Variables

    JavaScript Basics (Retired)

    Achieved

    Feb 6, 2015

    JavaScript Variables
  • Achievement

    Introducing JavaScript

    JavaScript Basics (Retired)

    Achieved

    Feb 6, 2015

    Introducing JavaScript
  • Achievement

    Functions

    Introduction to Programming

    Achieved

    Feb 5, 2015

    Functions
  • Achievement

    Objects and Arrays

    Introduction to Programming

    Achieved

    Feb 5, 2015

    Objects and Arrays
  • Achievement

    Control Structures

    Introduction to Programming

    Achieved

    Jan 29, 2015

    Control Structures
  • Achievement

    Basics

    Introduction to Programming

    Achieved

    Jan 28, 2015

    Basics
  • Achievement

    Fundamental Concepts

    CSS Basics (2014)

    Achieved

    Jan 26, 2015

    Fundamental Concepts
  • Achievement

    Designing with the Latest Features

    CSS Basics (2014)

    Achieved

    Jan 25, 2015

    Designing with the Latest Features
  • Achievement

    Basic Layout

    CSS Basics (2014)

    Achieved

    Jan 23, 2015

    Basic Layout
  • Achievement

    The Box Model

    CSS Basics (2014)

    Achieved

    Jan 19, 2015

    The Box Model
  • Achievement

    Understanding Values and Units

    CSS Basics (2014)

    Achieved

    Jan 19, 2015

    Understanding Values and Units
  • Achievement

    Basic Selectors

    CSS Basics (2014)

    Achieved

    Jan 19, 2015

    Basic Selectors
  • Achievement

    Getting Started with CSS

    CSS Basics (2014)

    Achieved

    Jan 19, 2015

    Getting Started with CSS
  • Achievement

    Introduction to Design

    Design Foundations

    Achieved

    Jan 18, 2015

    Introduction to Design
  • Achievement

    Grid Layout

    CSS Layout Techniques

    Achieved

    Jan 18, 2015

    Grid Layout
  • Achievement

    Flexbox Layout

    CSS Layout Techniques

    Achieved

    Jan 15, 2015

    Flexbox Layout
  • Achievement

    Positioning Schemes

    CSS Layout Techniques

    Achieved

    Jan 14, 2015

    Positioning Schemes
  • Achievement

    Float Layout

    CSS Layout Techniques

    Achieved

    Jan 14, 2015

    Float Layout
  • Achievement

    Display Modes

    CSS Layout Techniques

    Achieved

    Jan 14, 2015

    Display Modes
  • Achievement

    Media Queries

    Unused CSS Stages

    Achieved

    Jan 14, 2015

    Media Queries
  • Achievement

    Flexbox and Multi-Column Layout

    Unused CSS Stages

    Achieved

    Jan 13, 2015

    Flexbox and Multi-Column Layout
  • Achievement

    Web Typography

    CSS Foundations

    Achieved

    Jan 13, 2015

    Web Typography
  • Achievement

    Gradients

    CSS Foundations

    Achieved

    Jan 10, 2015

    Gradients
  • Achievement

    CSS Animations

    Unused CSS Stages

    Achieved

    Jan 9, 2015

    CSS Animations
  • Achievement

    Transitions and Transforms

    Unused CSS Stages

    Achieved

    Jan 8, 2015

    Transitions and Transforms
  • Achievement

    Backgrounds and Borders

    CSS Foundations

    Achieved

    Jan 7, 2015

    Backgrounds and Borders
  • Achievement

    Text, Fonts, and Lists

    CSS Foundations

    Achieved

    Oct 24, 2014

    Text, Fonts, and Lists
  • Achievement

    CSS Box Model

    CSS Foundations

    Achieved

    Oct 13, 2014

    CSS Box Model
  • Achievement

    Values and Units

    CSS Foundations

    Achieved

    Oct 12, 2014

    Values and Units
  • Achievement

    Advanced Selectors

    CSS Foundations

    Achieved

    Oct 4, 2014

    Advanced Selectors
  • Achievement

    Selectors

    CSS Foundations

    Achieved

    Sep 30, 2014

    Selectors
  • Achievement

    Getting Started with CSS

    CSS Foundations

    Achieved

    Sep 25, 2014

    Getting Started with CSS
  • Achievement

    Structuring Tables

    HTML Tables

    Achieved

    Sep 25, 2014

    Structuring Tables
  • Achievement

    Table Basics

    HTML Tables

    Achieved

    Sep 25, 2014

    Table Basics
  • Achievement

    Choosing Options

    HTML Forms

    Achieved

    Sep 25, 2014

    Choosing Options
  • Achievement

    Organizing Forms

    HTML Forms

    Achieved

    Sep 25, 2014

    Organizing Forms
  • Achievement

    Form Basics

    HTML Forms

    Achieved

    Sep 25, 2014

    Form Basics
  • Achievement

    Introduction

    HTML

    Achieved

    Sep 21, 2014

    Introduction
  • Achievement

    Ruby Methods

    Ruby Basics (Retired)

    Achieved

    Sep 19, 2014

    Ruby Methods
  • Achievement

    Ruby Numbers (Ruby Basics)

    Ruby Basics (Retired)

    Achieved

    Sep 18, 2014

    Ruby Numbers (Ruby Basics)
  • Achievement

    Ruby Strings (Ruby Basics)

    Ruby Basics (Retired)

    Achieved

    Sep 18, 2014

    Ruby Strings (Ruby Basics)
  • Achievement

    How Ruby Works

    Ruby Basics (Retired)

    Achieved

    Sep 18, 2014

    How Ruby Works
  • Achievement

    Debugging HTML and CSS Problems

    How to Make a Website

    Achieved

    Sep 18, 2014

    Debugging HTML and CSS Problems
  • Achievement

    Sharing a Website

    How to Make a Website

    Achieved

    Sep 18, 2014

    Sharing a Website
  • Achievement

    Adding Pages to a Website

    How to Make a Website

    Achieved

    Sep 18, 2014

    Adding Pages to a Website
  • Achievement

    HTML First

    How to Make a Website

    Achieved

    Sep 18, 2014

    HTML First
  • Achievement

    Responsive Web Design and Testing

    How to Make a Website

    Achieved

    Sep 18, 2014

    Responsive Web Design and Testing
  • Achievement

    Styling Web Pages and Navigation

    How to Make a Website

    Achieved

    Sep 18, 2014

    Styling Web Pages and Navigation
  • Achievement

    Customizing Colors and Fonts

    How to Make a Website

    Achieved

    Sep 13, 2014

    Customizing Colors and Fonts
  • Achievement

    CSS: Cascading Style Sheets

    How to Make a Website

    Achieved

    Sep 13, 2014

    CSS: Cascading Style Sheets
  • Achievement

    Creating HTML Content

    How to Make a Website

    Achieved

    Sep 12, 2014

    Creating HTML Content
  • Achievement

    Beginning HTML and CSS

    How to Make a Website

    Achieved

    Sep 11, 2014

    Beginning HTML and CSS
  • Achievement

    Newbie

    Achieved

    Sep 11, 2014

    Newbie