We'll be using Express and MongoDB to build our authentication system.

Express is a popular web application framework written in Node.js.

It provides many features you'll need when creating a web application.

MongoDB is a document-based NoSQL database.

We'll use Express to manage the web application and

Mongo to store user information like email and password.

In this course, we'll take a basic website and add a way for

users to create an account log in and access a password protected page.

Let's take a look at the completed application so

you can see what you'll have created by the end of this course.

Here's the beginning of a web application called Bookworm.

It's for lovers of books.

Well okay the site isn't a real web application.

It's just the skeleton of a site that I'll use to teach you how to add user

authentication.

The home page is simple.

Here's a nav bar with various links to other pages on the website and

a button to log in.

If we click on links to other pages,

you'll notice that some are accessible without logging in, like About Us and

Contact Us, but the MY PROFILE page here requires me to log in.

Now, but before I can do that, I need to create an account,

need to provide some information like my name, my e-mail address, my favorite book.

Password, confirm that password and then click Sign up.

This creates a new user and logs me into the site.

When I visit the My Profile page you'll see that the web application

knows who I am.

But if I log out, visit My Profile I no longer see my profile information.

That's because I'm no longer an authenticated user.

But I simply log in again, And there's all my information.

That's the basics of what we'll be building in this course.

In the next video I'll show you how to set up the project so you can follow along.

I'll also step you through the structure of the project.

Let's go.