No problem, we do have members here who aren't the best at English but everyone starts off somewhere, right? You're sure to get some practice by posting around here anyway. :) Welcome to the forum, Tiago!
Battling is very fun but I get my behind handed to me aaall the time.. haha. D: Though I usually prefer to battle on Pokemon Showdown over WiFi since it's easier to access. Do you have a preferred tier (OU, UU, etc)?
Enjoy your stay here and hopefully you'll stick around for a long while. Don't hesitate to ask the staff for help if you need it, we're always around.