Welcome aboard! Just go for it, I lost my hair, and it was thinning considerably by 20 years old. Like many, I started with clippers, down to a 1 setting all around, then with no attachment, and finally just dropped the clippers completely and bought a Headblade. Haven't turned back since, been shaving my head for 6 years now, and you will quickly understand that it was no big deal in the first place, and tha tyou should of done it sooner!
Anytime you want to ask some questions of another young guy who went bald way before "his time" feel free to shoot me a message. I'll give you some tips that would have helped me!