Suggest you start with trying to locate the VIN#...likely on the tongue somewhere. If you don't have a Bill of Sale or a title of some sort, you're going to have to do some leg work, but the license branch will tell you what they need....and it'll probably be a bunch of stuff. If you're going to be taking it out on the road, tires for sure and a good exam of the undercarriage, brakes, etc. Just starting with a good scrubbing and waxing will make a huge difference. When you see pix of campers that are barely hanging together, you're way ahead of that, so be encouraged. I think you can make something comfortable out of this and it will rachet up to "antique" rather than "old". Don't know what the inside is like, but some elbow grease, some new curtains or blinds, fresh upholstery and you should have a comfy place. Pictures.....we LOVE pictures. Good luck.