You'll more than likely to be told to search for this type of thing as its been covered lots of times. But basically you want rear wheels off, reae of car on axle stands, disconnect handbrake cable and brake lines which I tend to disconnect via the load sensing valve on the beam itself. Then youll just want to undo the 4 bolts, might want to crack them with a breaker bar. Once the bolts are removed the beam will drop. Theyre usually not too seized youll just want a breaker bar to crack them.