TeriAnn's pretty much described the ideal procedure for levering the shoes onto the slots with the springs already attached. With that question answered, I might add...
...that on occasion I've found it helpful to throw out a few cuss words when things aren't working out quite as smoothly as you've envisioned the whole procedure in your mind. This is especially true when doing the handbrake shoes.
--Mark
1973 SIII 109 RHD 2.5NA Diesel
0-54mph in just under 11.5 minutes
(9.7 minutes now that she's a 3-door).