Please help me shop smart?

Since your budget is only $150, I really advise you to stay away from name brands (Polo, Hollister, etc.) So you can get alot of stuff for $150. Get some jeans, some more shirts, if you wear flats, some flats. Its best to get alot of shirts than jeans so you can mix n match your clothes. I would say get 5 pair of jeans, but pairs of jeans are like 20 or higher but if you can find some cheaper thats good.