I believe the easiest way to get into RVing is with a travel trailer and truck. That is probably the least expensive way. Doing that will give you a vehicle to use for exploring after you get to your destination and also to run errands or go for that item you forgot - which always seems to come up. :D
Backing a travel trailer is not hard at all. After just a couple of trips you will be a pro at it. In addition, most campgrounds have pull through sites where no backing up is required.
If after a few years, you feel you want to move to another type of RV the combo should be easier to sell than a Motorhome, simply because tt are the most popular type of RV.
Good luck with your choice and hunt. Should be a lot of fun. :)
Barney