In Dec and Jan I've had a flurry of PMs asking about various aspects of RVing, campgrounds, etc. There are several web forums chock full of information to help the RVer. These are generally much better than the few books available, plus you get to ask questions!
I thought I'd post these here as a general reference (and then I can link to it!).
Best site for finding a decent RV Park/campground: www.rvparkreviews.com
Good general RVing sites:
Best sites specific to the fulltime RV lifestyle:
"Escapees" is a wonderful non-profit org dedicated to supporting/facilitating the RV fulltimer.
If I'm trying to figure out the best route somewhere, congestion issues, etc:
Even if you aren't considering the lifestyle - the sites above are fun for living vicariously!