It has been a long time since I had any firearm training but here is a suggestion about training and what you read. First, read everything you can but don't mention a word of it to the instructor, unless I guess it was something the instructor gave you to read. This applies to all sorts of instruction, of course.
I suppose one reason younger people make better students is that they haven't had time to develop their own ideas and anyway, you know how your head gets thicker as you get older.
Shoot low, sheriff. They're riding Shetlands!
Underneath the starry flag, civilize 'em with a Krag,
and return us to our own beloved homes!
Buy War Bonds.