Yeah, you just have to go do it in a safe environment. Also, get out and look at how steep you can cut it before you jack-knife.
There will ALWAYS be people watching you park at every campsite. No avoiding that. Sometimes it goes great and you look like a pro, and sometimes it takes 5 tries with lots of shouting at the wife.
The biggest thing to remember is which way to turn and to watch the top of the trailer around trees. Also, no video is going to teach you how YOUR rig will respond to a given input.