Each trail has unique topic related to rails apps development :
+Foundations
+Design
+Workflow
+Ruby on Rails
+Testing
+Clean Code
+Vim
Trails
Each step in a trails has a video explanation with two person, one asking questions (business related or clear explanation) and the other one explains while either writing the code or explaining the logic of the written code)
In some exercises you are expected to write the code and get reviewed.
Flashcards
These are useful for memorizing pocket information comes with a different technique
Flashcards are code examples which could be beneficial when refactoring and solving problems