This video shows you how to change a bicycle tire with your bare hands. First, he shows you how to get the tire out. Use the valve cap to let all the air out of the tire tube and then loosen the bead all the way around. Eventually you can just pop the tube off then inspect and patch it. Then you put the tire back on and pump some air into it. Make sure the tire looks like it's seating properly. That is how you change a bicycle tire.