How to know if i'm getting athletes foot?

Check your foot: If it is itchy and scaling especially between the toes then you probably have it. See a podiatrist.

To start with...: The best otc medication (in my opinion) is lotrimin (clotrimazole) ultra. Socks should be a synthetic material like those manufactured by thorlo [http://www.Thorlo.Com/]. Dilute vinegar soaks are good as well. Dry the inside of your shoes by placing them up-side down over an air return vent at home overnight. If this doesn't make things better in a couple days, see a podiatrist.