Teen pregnancy

So hey guys :) 
First of all I'm not pregnant, but I'm considering having a child. The thing is that I'm only 17 years old and still in high school. I've always wanted a big family and I wanted to start early. So I'm looking for some advise here. E.g. Moms who had their child in their teens, but I'd be happy to take any advice from you. 
Thanks Viv ;-)