Some of the most important things you can do in taking care of your feet is to wash them well daily. Regular soap and water, antibacterial soap, and particularly drying well when you're done can avoid many problems.
What you put on your feet is equally as important. The socks you wear are very important with proper foot hygiene. Some socks cause excessive moisture, which can lead to fungal infections.
The shoes you wear are also critical in proper foot health. The type of shoe should be stable and protect your feet.
Know your feet. If you have a foot deformity, accommodate for it with a shoe. Don't wear tight toe boxes. Wear your appropriate width, and if you are exercising, replace your shoes periodically. The average life span of a sneaker or shoe is 6 months or 500 miles, whichever comes first.