Not sure what you mean by seperate shocks and springs in this situation, unless yours has coilovers fitted already..
Standard shock setup is a shock absorber strut and spring, removed and fitted to the vehicle as one unit but seperable if changing springs or shock strut..or both.
I'd replace the top mounting rubber bushes (one under turret and one above on each side) if you want to do a proper job.
Watch out when undoing re tightening the bottom fixing bolt, the head is shallow on these for some reason and it's easy to slip off and round them even with a socket, it's recommended that these are replaced too as they take a lot of strain, a manual will help..with torque settings and stuff..
Other chaps here may help out..
If it's rear wheel bearings then pretty easy, if your talking about the bearing pressure nut then roughly finger tight..what i do is spin the hub with one hand and feel and tighten the nut until it holds the hub snug to spin free but not tight.
That'll get you started anyway
