Check out
this sticky, it's designed to help you out with getting started. :) Any questions about actual competitive play fit into Competitive Team Help's Questions thread or if you have a full team, within that forum (the forum that sticky is in is Battle Center - which covers all about battling, however is divided into two parts, being in-game and competitive).
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I've done everything I wanted and it was more than I thought it'd be
I will leave my mark so everyone will know
I was here.
I lived, I loved
I did, I've done...
I just want you to know that I gave my all,
Did my best,
Brought someone some happiness
Left this place a little better
Just because I was here...