Re: Got into the DOTA 2 Beta. I've never played DOTA. Wat do?
Search for the guide (and I'm serious here): Welcome to Dota, You suck
DOTA has a pretty long learning curve, but is also the kind of game that you can play for years and never get sick of. Every game is a little different and there are so many heroes with their own strategies it would take a 1000 games just to try each hero and their potential 'builds'
Also, prepare for an onslaught of verbal abusing telling you how bad you are and that you are ruining the game. Par for the MOBA genre.