What clothes should i buy for high school/summer?

Im heading off to high school in August (Metro ATL schools start in August if your wondering) Thank you Jesus. I have 2 Aero shirts as we speak and i want to buy more popular brands like Hollister and Abercrombie (im not trying to fit in and everything). Im on a tight budget now. I got $40 right now and still need some money left over so i wont go broke (ill go crazy if im flat broke!). So what clothes should i buy for school/summer for a 14 year old black teen?? appreciate it.