Hi dundee.
Don't worry if you make mistakes, we're a forgiving bunch (initially anyway)
You're not alone with the guitar size issue, it has been brought up a few times here already and there are smaller guitars you can buy (both electric and acoustics) with either shorter necks or smaller bodies or both.
Here's a thread discussing small electric guitars.
If you are after an smaller acoustic, there are also many of those available.
Anyway, welcome to the forum. Nice to have you here.
Clancy
"I like work: it fascinates me. I can sit and look at it for hours". Jerome K. Jerome