Definitely have all your friends create a profile on http://gayburners.com/
. As Burning Man approaches the site will get much more active, and you'll get lots of info regarding camps that are out there and LGBT-friendly activities they are planning, including workshops, gatherings, parades, meat-n-greets, dances, bike rides, etc. There will also be a number of events listed on the burning man website andin the the guide you get at the gate, so take a hour and look through it.
Once you're settled into your home, visit some of the LGBT camps, socialize and participate. In conversations you'll learn of even more camps and activities. I've always had a nice time at Celestial Bodies, great place to sit, have a cosmo (alcoholic or not), chat and meet people.
See you on the other side!