Sorta "Poll" - Your Three Most Useful RV/Camping Books

No paper CG directories for me any more. I use Ultimate Campgrounds, Allstays, and freecampsites.net more than anything else. When planning a trip, I look at CG options in the areas I expect to be overnighting. I try to have a 1st choice and a couple of backups nearby (preferably one closer and one farther along) in case the 1st one is full or if I decide to drive a bit more or less. On the road, if I change my plans and want to check out CGs in an area where I didn't check previously, I can almost always get a cell signal along the highway but if not I can drive until I get a signal. If I need wifi, I can look for a McD's or similar place that has free wifi.

There are places in the middle of nowhere with no cell service. However, if I'm heading somewhere I am unlikely to be in the middle of nowhere all day long. Somewhere there's a town or other place with nearby cell towers.