We are going full timing in about 70 days . OCT1, 2015 We can't wait to get on the road. My home park is Thousand Trails on lake Conroe. We have Thousand Trails, Coast to Coast, RPI, Escapees, Nation...
Check out uscampgrounds.info for all types of public campgrounds in the US and Canada--many of them almost free.
Be sure to get a Senior pass at any Federal facility. It will get you 1/2 off basic site prices at any National Park, National Forest, or COE campground.
I also like Moon Travel Guides to help with detailed info on any part of the country. Lots of neat places to see that you might otherwise miss.