New to the scene, have some questions

Just started to get back into the scene after playing beyblade in my childhood and was wondering a few things.

1. Where do y'all get your beyblades from?
2. what are midfakes 
3. are midfakes legal or illegal
4. how to tell if something is a midfake
5. What are they beyblades I should pick up first
6. anything i should know about purchasing beyblades