More than likely the bearing will not just slide off the shaft. If it does you simply slide the shaft out a bit and change it (might as well change the other side also). If it doesn;t come off, you should be able to get the shaft out by bending the side of the bellypan out a bit on the clutch side. Then you have to have that bearing pressed off. If you or a buddy has a press, thats great. If not, most auto parts stores (a good one, that does rotors and such) most likely has one. Should charge you no more thna $10-$20 to take it off. You will frustrate yourself trying to cut that thing off, opr beating it off.
When you install the new one, use a little neversieze.
When you install the new one, use a little neversieze.