Azulmono55

Hey guys, I'm a pretty big newb to ArmA II and the whole mil-sim genre as a whole - I was wondering: What, in your opinions, is the best way to get the more complex stuff down without annoying anyone in Multiplayer? I mean, I've got a fair few missions into the Campaign, but I know I'm not doing well at all, and I've got a feeling I don't even understand half of it. I've skimmed that ShackTac guide, and know that practising Helos is as simple as going into the armoury, but what's the best way to become a better infantryman without joining some sort of clan?