Go get your bicycle right now. Remove the rear wheel. Take off the tire, remove the tube. Then put it back together again. Repeat.

That's how I learned to do it. And guess what ... it's really EASY!!

Of course there are different people who have different techniques and you might want to experiment with those too. Some don't remove the tire completely - they just remove one side and pull out the tube. Others (like me) remove everything.

Don't forget to pretend to check the inside of the tire for pieces of broken glass or wires or whatever ... ah, but do not run your hand around the inside!! You could end up with the glass or wire in your finger. Look carefully instead.

And one tip ... you might want to have an extra tube on hand while you're going this just in case you happen to pinch your tube in the process.