I have a single piece of advice for you when you do feel ready to try it for real, hun, and that is: SAFEWORD
Agree it, understand it, and be ready to use it. And make sure that you are working with somebody that you KNOW you can trust to respect it.
Have fun, hun. Your body's a wonderful thing, and getting to know JUST how it works can be GREAT fun
But there's no standard manual you can go away and read to learn all about it, because each one is a bespoke model with its own custom features ...