As TrailBeast said. It is detailed in the factory or Haynes manuals, and same for most older cars.
My driver's side failed 500 miles after having both bearings replaced on both sides. The passenger's side failed 4 years later. I watched the mechanic do it and he seemed to have changed the races and tightened the spindle nuts correctly. Maybe he should have washed the hub w/ gasoline so no grease left between the race and hub to let them spin. I wouldn't change the bearings unless absolutely necessary, and would consider leaving the existing races in if they look OK (no pits or scores).
