Step 1: Deflating the Tyre
The road bike valve, the valve shown in the instructable
And the american valve (the tick one on bmx and mountain bikes)
Step 2: Removing the Tube
First stick the hooks into the gap and hook them onto the groove of the wheel and pull them back down to the spokes of the wheel and hook them onto one.
Repeat this with another hook a little bit further down the wheel (about 10 inches). It may be a bit of a challenge with the second hook because it will be quite tight.
BE CAREFULL NOT TO HOOK (PINCH) ONTO THE TUBE WITH THE TOOL
After pull some of the groove over, pull the rest over all around the wheel, then remove the tyre by scooping and pulling it out. and to get the hard valve bit out you have to pull back the tyre.
Step 3: Pulling Off the Tyre
Just pull it off, but if is to tight used the tools again.
Step 4: Putting in the New Tyre and Tube
Make sure the tubes a little pumped up.
Step 5: PUMP IT
30-40 psi for BMX / Mountain Bike
100-120 psi for Road / Track