Congrats on your purchase and welcome to our forum.
I would suggest you skim the posts on the Motorhome forums, it will give you some idea of what you could expect. In general, if all systems are "go" at present, you will want to establish a maintenance routine as you would for any motor vehicle- oil/filter changes/ trans check and service as necessary/ cooling system, etc.
Then you will also have the coach systems to maintain as needed, the furnace, a/c,water, and such may need some attention. The body requires washing and waxing to keep the coating up. but your weather my prevent that for awhile.
If you have the records from the p.o. it will help in getting off on the right track, I know you will enjoy your new rig.