Im starting middle school and im scared. help?

okay i'm starting middle school on August 25th and im SOOO scared! i dont know where any of my cles is, and when i went to open house, i barely found my homeroom! again, im realllyyyyyyyyyy scared! please help me? i seriously need it! i know, your going to say "dont worry, ur not the only one! relax!" but seriously, i need some tips, and QUICK! and im taking the bus in the morning&afternoon, and ill have no one to sit next to and im extremely shy.. but ive gotten better. and the cafeteria? pshh! i dont even know where that is! the only thing i know is that my homeroom is on the second floor, but i dont know where! please help me, im sooo scared =[