Hi. I am 14 and just started going through puberty, so I am in preadolescence.
Wow what exactly does going through puberty entail?
It's a physical and psychological transitional stage that occurs during the period from puberty to legal adulthood.
Sounds very technical, can you tell me anything else about puberty?
It's usually associated with the teenage years, but it could begin or end earlier or later.
That seems about what I expected. Do hormonal changes occur during puberty?
Yes. And it also involves not only physical growth, but cognitive development as well. 
Sounds fascinating, and it sounds like a very important developmental period.