Definitely do some searching, online there is quite a bit you can find, go to any dealer armed with knowledge. I've browsed the PPL site before too, a good place to start.
Perhaps the biggest thing you need is to narrow down what you need, and want as far as type, size, features, etc. There are so many options the information could be overwhelming.
If you are looking Travel Trailer, or any towable.. I'd look really close at the running gear and suspension, and frame.. I've found generally that these are built rapidly and with the lowest cost parts that meet the minimum legal standard, and these parts need replacement and upgrade for even low miles and use.. that and some of the associated systems as well.. mine is about 10 years old, and I feel like I've just about rebuilt the entire thing at this point.. More details on my latest suspension and tire/wheel efforts over on another thread:
https://www.turbodieselregister.com...l-size-for-better-tires?p=2442189#post2442189
I do have to say though, when not working on the RV, it is nice to take family trips and have all your items handy, make quick stops for meals on the road, and have one's own space away from home.. overall it is a decent way to go out and explore, and if you use parks, state, national, regional, and use it for most meals, you can make it economical compared to hotels and restaurants, even with the higher fuel used. In my case it worked out that I have one on the small side, which is helpful when looking for RV campsites, often there are size limits at the parks, and maneuvering a large rig can be difficult in places.. so even though I now have a truck that can haul just about any rig, I'm still good with the smaller model that could be towed with a 1/2 ton, I just have to check from time to time that it has not been left behind (cause the truck tows it with ease!).