There was a case many years ago in Toronto. Some kid always wanted to be a helicopter pilot. He got the manuals, read up on it, knew all about flying one - but no hands-on experience. he broke into a helicopter base in downtown Toronto one night, they figure he got about 100 feet up before he crashed and killed himself and destroyed a helicopter. He started twirling, overcorrected, dove into the ground. The pilot there said it was classic beginner mistake.
The controls are completely different, and it takes practice, practice, practice. I’ve got just basic fixed wing, and read up on helo controls, and it’s very very different, and the controlmovements you have to do to control and react to how the craft moves are not at all the same.
if you’re bored one day, try flying one of those toy helicopters you find everywhere. they’re equaly twitchy, but replacement rotor blades are a helluva lot cheaper…
OTOH, a guy who had read a lot but no practical experience - might even survive their first attempt at fixed-wing flying.