As has been stated tread lightly. Pack out more than you pack in. Go at a comfortable pace, don't do anything that sketches you out. Get a feel for your vehicle, know it's limits. It is better to start small tirewise/modificationwise and work your way up as you find these limitations.

It is important for all of us to be as active as possible in keeping public land accessible to the public. As offroaders and OHV users, we are the #1 target of radical environmental organizations like the Sierra Club and Center For Biological Diversity. They use us as scapegoats frequently to push for broader public land closure to some extremes as to gate areas off entirely to prevent any access.

We all act as ambassadors for the sport. While volunteering is obviously not mandatory, by working together we have been able to stop and prevent some public land closure, but have lost far more. If you want to get involved, join the Blue Ribbon Coalition or other local public land use organizations and research the current issues. These are some good resources for that:

http://www.sharetrails.org/

http://treadlightly.org/

Current issues:

http://www.pirate4x4.com/forum/18-land-use-issues/?pp=25&daysprune=365