Create a simple blog system and learn the basics of Ruby on Rails including:
Models, Views, and Controllers (MVC) Data Structures & Relationships Routing Migrations Views with forms, partials, and helpers RESTful design Adding gems for extra features
This was done as part of The Odin Project's curriculum (https://www.theodinproject.com/courses/web-development-101/lessons/ruby-on-rails?ref=lnav) via JumpstartLab (http://tutorials.jumpstartlab.com/projects/blogger.html).