oh after you get the drums off, replace the shoes on one side and leave the other one together. so you can look at it.
take some pictures maybe. the must go back with all the springs in the correct places. draw a picture. even the way the springs wrap around the mounting studs matters.
as well as the orintaion of the spring. you can not swap them or turn them end for end.
there is a small kind of hidden one behind the shoes, look for it before you take them apart.
there is a sticky on the main page with service manuals.

also fill out your profile as I have no idea what year truck you are working on.