Welcome to the Treehouse Library
This is a sample catalog of all the courses we offer. Browse by topic or difficulty. Sign up today and get access to our entire library. Treehouse students get access to workshops, bonus content, conferences, and more.
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Ruby Basics
Ruby is a programming language with a focus on simplicity and productivity. It has an elegant syntax that is natural to read and easy to write. In Ruby Basics, we'll learn how to work with Ruby and write simple Ruby programs.
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Build a Simple Android App with Kotlin
This course covers the very basics of Android development. We will build a simple app that will serve up some fun facts when you tap on a button. We introduce you to programming in Android, a tool for Android development called Android Studio, and some very basic concepts of the Android Software Development Kit, or SDK. By the end you will have a good idea of how a basic app works, and you will be armed with the knowledge to start building more.
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CSS Grid Layout
CSS Grid Layout provides a built-in, more efficient way of designing grid-based layouts in the browser. It brings a new set of properties, functions and flexible units that let you control the exact placement and sizing of grid components.
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Introduction to Xamarin
An introduction to developing mobile apps using the Xamarin platform. You'll learn what the Xamarin platform is and how it works. You'll setup a development environment that will allow you to build Android and iOS apps. You'll also learn techniques to share code across mobile platforms. Complete this course and you'll have a functioning app on Android and iOS using the Xamarin platform.
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The following items are scheduled to be released soon. You can also visit our content roadmap for more info.
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Active Record Associations in Rails
Most of your Rails models are going to be connected to other models in some way. An Author has many Articles, and each Article belongs to an Author. A Doctor has many Patients, and a Patient may have many Doctors as well. Rails uses associations to make it easy to track these relationships in your database.
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Saving Data on a Server
So far all our networking code could do was make GET requests but being able to send and save data to a server is just as important. In this course, let's improve our networking code and learn how to make a POST request. There are a lot of additional concerns when saving data and we'll spend some time talking about security, preventing malicious input and much more.
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Unit Testing in iOS
Unit testing allows you to test your application for logic errors, prevent crashes, and even write better code. In this course, we cover the philosophy behind unit testing, ways we can structure our code to make it more testable and look at tools we can use to test our code. We'll look at both tools that come built in, like the XCTest Framework in Xcode, as well as a few third party solutions for both Objective-C and Swift.
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Prototyping with Figma
In this course, you'll learn how to build interactive and sharable prototypes in Figma, a web-based visual prototyping tool. You'll create a prototype for a "prosumer" mobile photography app, and by the end, you'll have a better understanding of how to create interactive prototypes that can be shared with project stakeholders and team members.
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Digital Media Through Photoshop
Get started with creating your own digital media files. Setting up your documents properly before you start creating will be crucial for your end product. In this course we’ll learn what those considerations are as well as how to choose the right options. We’ll introduce the most prolific creative application Photoshop to set up our files, make some adjustments and come out the other end with a banner ad suitable for use on the the desktop and mobile as well as print. This course is perfect for anyone looking to get started with design or photography.
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Build an Image Viewer
In this course, we're going to build an image viewer that allows a user to thumb through an album of images, select one and then perform the usual operations like pinching, zooming and so on. In doing so we'll develop and understanding of Scroll Views in iOS and how to implement paging.
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Build A Selfie App
In this course we're going to build an app that is quite popular these days - a selfie app! We'll learn how to build and apply filters, how to use Core Data for more than just a single entity and how to use the device's camera to create a fun app!
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Building Services with ASP.NET Web API
Services expose data and processes through APIs (Application Programming Interfaces) implemented using common approaches or standards. Decoupling our back-end from our front-end makes it possible for our services to support multiple client apps. We can even allow other developers and organizations to consume and use our services to further broaden the reach of our applications. In this course, you'll learn how to use the ASP.NET Web API framework to build a RESTful service or HTTP API. As you learn about Web API, you'll create a service for the Fitness Frog single-page web app (SPA) developed using Angular.
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Bootstrap 4 Basics (Refresh)
Learn to use the latest in Bootstrap 4, one of the most popular open source front end frameworks, to help you build a functional design and layout in little time.
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What's New in React 16
Get up to speed with what's new in React 16, a ground-up rewrite of the React core library.
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JavaScript Array Iteration Methods
Learn how to access and transform data in arrays with JavaScript's array iteration methods. You'll learn how, why and when to use these powerful methods to make your code easier to read and more concise.
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Data Analysis Basics: Making Decisions with Data
Learn how to make better decisions with data in this course on data analysis. We'll start by looking at what data analysis is, and then we'll see how we can use data analysis to create better outcomes.
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Introduction to GraphQL
Simplify your backend with GraphQL, the new query language and runtime that is taking the world by storm. With GraphQL, it’s no longer necessary to resolve a bunch of different REST endpoints to get a complete chunk of data. We can use GraphQL to tell a server which data we want, and exactly what it should look like. Whether you’re a front-end developer looking to simplify your workflow, or a back-end developer looking for a way to compose more robust APIs, this course is the perfect place to start.
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Build a Chatbot with Watson APIs
IBM has created an AI platform named Watson that gives businesses and developers access to powerful tools for text and speech analysis, computer vision, and more. Watson APIs consist of a suite of services used to process or analyze data to answer questions and make decisions. This course will show you how to build a chatbot with Node.js and the Conversation and Discovery services from Watson. You'll also learn how to setup and deploy your bot on IBM's Bluemix platform.
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Java Arrays
Arrays are a container object that allow you store many values of the same type in a single variable