We're glad to hear that your travel scope is broadening.
The planning is half the fun... for my wife. If you're like me, delegate the research to a family member who does enjoy it.
She uses online reviews, but says it's best to look at a bunch of them to see which ones cover your interests and requirements best.
For uncomplicated stays, check out state parks, Army Corps sites, and even county parks. (Opportunities vary by region.)
State gazeteers by DeLorme or National Geographic list campgrounds and recreational possibilities by state, in addition to providing detailed maps with geographical contours (to help you avoid scary routes).
Enjoy your travels.
(That man in that tiny can)
(Same man, Bigger can)