(I"ve done this twice for over a year each time)
Definitely recommend these folks' web site (Cherie and Chris)
Also HIGHLY recommend the Escapees Club (http://www.escapees.com and http://www.rvnetwork.com/ for the discussion board). This is one of the original organizations for full timers. If you can, their "Boot Camps" are a great way to learn about living on the road and RV's in general. About 1/2 of the people will not have bought their RV yet.
If you don't have a trailer or truck yet, research, shop, shop, research. NEVER believe a trailer salesman about how little truck you need or a truck salesman about how big of a trailer you can pull.