Any tips for freshman attending high school? ✮⋆˙

Hi!! About to be a freshman here, is there anything I should know or prepare before attending high school?

I mean I've heard of many things like building up credit, AP classes, waking up early, scheduling, things that I should avoid, the people I hang out with, hygiene, and studying.

But with all of these in mind, it is really overwhelming and I don't know where to start so I wanted to reach out for some advice! ^ ^