Loading collection data...
Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
This is the only useless comment I see. As a beginner, you are taught to use comments in this way to get in the habit of using comments to explain what your code is doing.
Useless comments