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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.
And it's necessary to say this because ...? Insulting others who may have found this hard doesn't make you a better developer.
And your point is?
Does it really matter? Honestly. Not everything in life has to be a competition...