Learn Rails 3
MVC without generators
Create a RESTful model, view, and controller without using any rails generators.
Create the model, view, and controller for a nested resource.
Structure database queries to get specific information from a database efficiently.
Make a resource that belongs_to two other resources for nested comments.
Associations, delegation, callbacks, etc.
Many to Many Relationships
Rails practice problems on has_and_belongs_to_many and has_many :through relationships
Learn SQL with Rails 4
Single Table Queries
SELECT, CREATE, INSERT
Two table queries
has_many, belongs_to, includes
has_many :through join queries
WHERE, ORDER BY, LIMIT, OFFSET
Testing Rails models with RSpec
Rails controller testing