Interested but have zero experience...

I can't give you a lot of advice on the smaller trailers, but one thing I can tell you is that if gas consumption is a major expense be careful of the combination of vehicles you get. I have a 35 foot diesel motorhome and I get about 8 mpg. That means it cost me about 50 cents for every mile. The reason I bring that up is because I have known of people who got similar mileage by going with too small of a tow vehicle. I have a friend who has a Toyota Pickup with a 6 cylinder engine and tows a light weight trailer with it. Even though it's light, it still weighs up near the towing capacity of the truck. As a result he gets about 10 mpg when towing the trailer. He could tow a bigger trailer with a one ton full size diesel truck and get much better mileage than he does with his smaller truck-trailer combo. You could see the same results by using a car to tow something like a pop-up.