These steps assume that you’ve already removed the tube from the tire. If you haven’t done that yet, follow this link to get directions.
If you are cost-conscious, patching your tubes and using them again may be an option to try and save some bucks, but be forewarned: a patched tube will never be as reliable as a new one. The patch can fail again, so to be on the safe side, a patched tube should probably be replaced with a new one as soon as you get the chance.
