Beauty school

I am a 16 almost 17 year old almost out of school  who is Stressed about my future. I’m always googling and asking professionals for advice. I want to go to cosmetology school and open my own shop. I know some things about the subject, but I wanna know some things that schools don’t tell you about cosmetology. HELPPP. Any tips and Tricks for cosmetology and cosmetology classes will be GREATLY APPRECIATED. <3