Welcome! I'm not an "old guy" as you put it, haha, but I know my way around the site pretty well. Feel free to ask me, or just about anyone else on the site, questions if you have them. The chatter is a pretty good place for quick questions.
First of all, you're pretty new. The general concensus is that newbies should shart with studying instead of spell casting. The General Info section of the forums is a great place to start, specifically the pinned threads.
Secondly, spells won't be able to phyisically change you. They work more subtly. Instead of trying to change your physical body with spells, I would suggest practices that help you accept you physical body. Therapy, meditation, yoga, etc, are all good things for this.
I wish you the best.