How to get a real understanding of the products?

As I wanted to try getting into Beyblade X I was wondering how these product lines work BX, UX, CX? e.g. is CX always better than UX and UX better than BX? Or do u just dont give a fuck and get what u think looks cool?

Regarding builds, how does one evaluate these releases in their effectiveness? Is there any complete list of all the parts, like an index or so?