I just got the beta last night and i am wondering this. This may sound very stupid but i just cant find this anywhere. I was mashing buttons on my keyboard to see if they did anything not listed in the controls info and when i press "G" my demon huntress throws down a flag or battle standard w/e you want to call it. What exactly does this do????? lol i seriously cannot figure it out. Thanks in advance!
That is the Battle Standard. Essentially it's a customisable thing which can be used to fast-travel to your allies and do all sorts of neat stuff. It'd be a good idea to keep up to date with this website: http://www.diablofans.com/ . You'll also want to read all the existing articles, get an idea of the game.