The big secret is that school is fun. Your teachers and professors will be burnouts who will labor in strained tones to explain the finer points of Marxist critical theory to you... but since you know that it only makes sense after your first divorce, resurfacing memories of child rape and alcohol addiction, you don't need to worry about that now. Focus on the fun stuff.
You will be either a words/arts person, or a technology/science person, although if you push yourself you can bridge the worlds more easily than you think. There will be required crap. Put in the effort to know it. Then, use common sense. All of the rest of your schooling is extrapolated from the basic shit they tell you in the first five weeks of each big change (middle school, high school, college, gradjuate school).
Finally, have a clue. Everyone around you has everything they could ever want except a clue, so they are going to invent all sorts of social contrivances to hide their awkwardness. Trust me, those girls so self-confidently fucking on the first date have stuffed ponies back on their dorm beds which have pink sheets... it's a tragedy to witness innocence shattered by cowardice, but you will see it aplenty.
And you will see idiots fry themselves with drugs and alcohol or taking Marxism too seriously. Laugh at them, and tell them you how like your burgers now. In another ten years, you'll be able to jerk off on their faces and hand them fifty bucks and they won't even whine to their beret-wearing friends.
Just keep sailing a straight course for knowledge and joy. Wreckage will accrue. Laugh at how little you notice. You're here to build the future, not pry others from the deathlike past.