Tips for middle school girl?

Okay I'm using my sister's account right now.Anyways I'm going to be in 6th grade and I need some tips.My school doesn't have gym clothes and we don't get to change so how can I smell normal once I get out of P.E..the school hasn't sent me a schedule yet so don't we my classes are.I also don't get a locker until 7th grade because they are remodeling them.Thanks in advance