Suggestions please..new to this!

I suggest you start prowling rv lots and looking at all the trailers that are available. Don't just walk through but spend some time in them sitting pretend you are doing what ever it is that you do, watch tv, getting dressed, showering etc. Once you find a floor plan that you like then start prowling for that floor plan in both new and used. After you find a trailer that suits your needs and desires, choose the truck that is capable of pulling it. Usually a 22-25 foot trailer is minimum that I would even consider for spending a lot of time in. Slides make a lot of difference in living area, some like them, some don't,

There are lots of posts on here that provide info on GVWR, hitch info, and such. Pulling a trailer demands a GOOD hitch. Do not go cheap in a hitch.

Good luck.