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Not an easy job. There are many very good posts on the subject. I would use the search feature.
At a minimum you need to pull the rotor, parking brake shoes, take off the outer half shaft u-joints just to get the bearing assembly out of the car so you can press the bearings out. You will need an arbor press, a dial gauge, shims, alignment tools. Not a novice job by any means.
You can buy a rebuilt bearing assembly and just swap it out. Still a big job but much easier.