Why not just play Dota? It will prepare you for Dota 2. Everything is the same, at the moment.
I may not know the current meta of the game but I know enough to call mia, ward, push, create item and hero builds.
Everyone just picks a hard carry, farms all game long and expects to win.
Also, I mean bad as in I know they have played quite a few games before, by their trash talk. If a person is coming from LoL or never played before I would understand.