How do I tell when I've hit Puberty?

Hey there the first signs of puberty are your testicles getting larger and you starting to get pubic hair.

Puberty is a growth process of going from a boy to a man. The most important point is when a boy can ejaculate sperm and make a woman pregnant. That is the time he really becomes a fertile man able to make babies. All of the other grow processes are making his body into a man's body and happen at different times in different males. If you can ejauclate thick white semen spurts from your penis during masturbation or sex, you are probably a fertile man and have passed into manhood in your ability to make babies. Try masturbating by rubbing your penis up and down the shaft and see if you can shoot thick white sperm filled semen out yet. That is the best test for reaching puberty, shooting out that thick white sperm of a man who can father children any time he shoots his sperm inside a woman's vagina.

Biomajor is correct. Just be patient, maybe be active physically often, that can speed up hormone release.