No one gets any actual experience from the interweb... Sure, you can watch all the U tube vids in the world and read hours and hours of posts on the deal, but at some point, you just have to pull the trigger and go for it and buy it and use it and go from there..
Once you experience some things, then you will have the questions you need answered.. Until you know what does or does not work for you, it's just a guessing game really.
So, as was said, renting is probably the best thing you can do to get your feet wet with the whole TT thing..
When I bought my 2019 Rockwood, I had a ton of questions about all the new stuff with it.. My last trailer was a 2003 Prowler and while the appliances were similar, there was a lot of new things that I had to be schooled about. I've been exposed to rv's since I was a kid, so I've been around them a lot.. Still can always learn a new trick along the way.
Good luck!
Mitch