Click here to navigate the course.

Drag the edges to resize the window.

In Projects, you can keep track of your progress as you go throught the tasks. Check each item as you complete it!

Code Editor
Web Browser


Many web apps let users sign up for a new account and log in and out of their accounts. Together, signing up, logging in and logging out make up an authentication system.

Let's create an authentication system for a photosharing website built with Ruby on Rails.

If you're new to Rails, we recommend you do this course first.

Report a Bug
If you see a bug or any other issue with this page, please report it here.