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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.
exactly, my opinion is to know solutions from external modules, but more importantly, to actually put your hands on constructing a complex versions that has all the core problem solving steps.