Boyfriend issues!!!! help?

ok i'm TOTALLY new to the whole boy-friend girl-friend thing, and i just got a boyfriend (yay!!!!) we're in high school, and i TOTALLY don't know how to be around him. like do i act like nothing ever happened? do i cling to him? do i sit next to him all the time? do i try to be around him all the time? do i try to always be on his team during sports? do i try and kiss him? wb PDA? explain EVERYTHING please!!!!!!! =/ thanks =)