How can I best prepare for BYU?

Hi, I’ll be going to BYU this Fall as an incoming freshman. I’ll be taking Honors 120, Spanish, Rel 200, and a few easier classes as well. I should also mention that I have not been in school for about 2 years. How can I best prepare? Also, post whether or not you have taken the Honors class. That’s the one I’m most worried about. Thank you.