i have done this several times and it is fairly simple only IF you have a floor press.

1. remove tire
2. remove caliper and hang out of the way with lines attached
3. remove rotor
4. remove 4 retaining bolts
5. attached rotor inside out back onto the studs and bolt loosely
6. pull outwards on rotor and half shaft will slide out
7. you will see in this order from out to in

the seal (only if bearing uses an outside seal)
the bearing
the retaining ring

8. the inner two are pressed onto the half shaft
9. you will find it easiest to use and angle grinder carefully and cut a slot on the retaining ring until it loses its integrity and can hammered off
10. same for bearing but be careful SO half shaft where bearing rides is not nicked
11. once all is off place seal on FIRST then press on bearing and finally retaining ring