There are ATs round the clock. You can play with premades inhouse at any time. There is unranked 24/7. Where most AFK happens is in gold. There you can meet people having no clue about anything. Thats because running with a naked char in circles already earns you a high silver - low gold rank. You don't have to know anything except how to queue. The least you can do is to help such player to reach the rank they deserve ;-).