I really haven't played in a long time, and I tried today and was awful. I don't know anything about who best counters who, what division I should play in (DPS, Tank, or Healer). My favorite character is Genji just for the way he plays, but I'm awful. Death after death.
Basically what I'm asking is, is there any good resources for learning this stuff. This game is so much fun to me, but it is not fun receiving messages about how badly I suck immediately after a game. I'm not butthurt because the message was extremely accurate, I just would like to avoid the message in the future.