Welcome to the Forum!!!
I'd suggest you definitely get a roadside assistance plan. They're well worth the peace of mind for the minimal cost per year when compared to the cost of towing a motorhome from a distant location to the nearest service center. If you search this site, you will find LOTS of discussions on the pros and cons of Good Sam vs. Coach Net, two of the largest providers, and each has various levels of coverage.
There are also many discussion on here of websites and tablet/smartphone apps to use to find state, national or private campgrounds and make reservations if you choose to. It takes a while to get used to the search functions, but there is a LOT of info on this site! We just got our first RV last summer, and I realized on here that I have the same "newby" questions that many people have, and a lot of what I was looking for was here already without ever having to ask!