I just played my second game and I have no idea wtf I'm supposed to be doing. Is there no way to play against bots just to get an idea of how the maps work? Do I just keep doing my best?

So I've been playing this game since the beta and there's a glaring amount of basic stuff that people need to hear: 1. There's an attacking side and a defending side. There's one objective on attacking side: Plant the damn spike. That mean...