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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.
Same. Well, might have been a holey 45 minutes.
I love the Python experience of trying to figure out bitwise operations for a solid 30 min and then seeing this as the top answer.