I Need Help With The Fundamentals of High School Basketball and the drills that they do!?

Ok so i am going to be a senior next year and i plan to play basketball. I have never been on a basketball team but i play a lot of street ball and i have good handles and a great shot. I dont want to walk in looking like an idiot so i want to know what kind of drills they do and how to do them so i wont have to ask wtf they are doing. also i know the fundamentals of basketball but i have questions like on the more in detail stuff like i need help with pick and roll and wtf is a flare screen, idk what isolation is, idk what a 2 3 zone is, basically i need a lot of help please lol! thanks in advance. ps im going to be a point guard.