Hello and welcome. We learn by experience so don't worry about not knowing, it will come. By far the best site for campgrounds is campgroundreviews.com there is also a fledgling site started by a member of the crossroads forum called campgroundgallery.com. The idea is for people to post pictures and reviews of campgrounds they've been to. It has mostly NC but he's trying to get it nationwide.
Rudy, Jenny and Garrett
2014 Four Winds 35SK Super C - Ford F-550, 6.7 Power Stroke- Blue Ox tow bar with Patriot brake - 2004 CR-V, 2013 F-150 and 2016 Wrangler Sahara Toads - TST 507 tpms