Okay, so I know this is a huge problem area for anyone who is going into high school (or even college) for the first time. I'm going to stick with the topic of high school for now, but you can always relate it to college.
Almost everyone's first day, looks a little bit like this:
But it's really not too bad. A lot of people make it sound worse than it already is. I mean, school is already not that great. Come on, that's like 8 hours of my day I can never get back. I could be home watching Netflix.
If your school is really large and you have a HUGE high school, you might want to print a map of the school. You might find luck having teachers tell you where your next class is.
Don't be too stressed. If you get really stressed, the first day is a living hell. You always remember that you're surrounded by people who are older than you. Sure, it's scary. Just remember they want their 8 hours of time back just like you.
Sure, there will be assholes all around. But usually, they stick together and don't really bother a lot of people. And if they mess with you. I promise you that they didn't do it on purpose (unless you think they're crushing on you, then take it as a sign)
Just be yourself. Unless you're like, so super weird. By weird, I think you know what I mean ;)
Good luck

