Lots of good advice here jill... we camp in Ohio quite a bit - lots of great parks and campgrounds to visit!
Definitely go used if you don't have a lot of experience, a small motor home is convenient, especially if you can tow a car behind. We are on our 4th RV and they got bigger and more expensive each time. We have a large fifth wheel trailer now and honestly, it is as nice as my home. LOL
I much prefer travel by RV than hotels - I like knowing who slept in my bed the night before!