Check out Trinewbies.com, beginnertriathlete.com, and slowtwitch.com. You may find materials there. I've also clipped past training plans from Triathlete Magazine and other sources. Again, it all depends on where you are starting.
As far as training, there are number of tri clubs in the Maryland and DC area. DC Tri Club has a decent number of gay members. I try to organize a LGBT happy hour for the club once a year, but we generally don't feel a need to segregate because acceptance in the club is quite high.