How do I easily get rid of athlete's foot?

Antifungal cream. Apply it twice a day. Examples: tinactin, (tolnaftate) micatin, lotrimin etc....Available over the counter at your pharmacy.
Topical antifungal . Cream found in the pharmacy, get a prescription if needed for another one. Also, keep your feet dry, especially between the toes. Change shoes daily, socks which wick perspiration away from the skin. There are also devices which use uv light to sanitize shoes to limit exposure.