if you have not yet done so, investing in a haynes or clinton's manual for your specific car is a great investment. most auto parts stores carry them or you can search the internet under chiltons or haynes repair manual and the make/model of your car.
for drum brakes, chuck front wheels,loosen lug nuts both side, and jack up car. remove wheel.
the drum will have 2 machine screws holding the drum in place, remove them.
the drum should come off with a little tapping. make sure e brake is off.
you will see two shoes connected by springs and the brake cylinders. also the ebrake arrangement will be apparent.
see why the manual is handy now?
using screwdriver and pliers, dislodge the brake shoes from the cylinder to relief spring tension.
unhook the springs and remove shoes.
depending on the age of the vehicle, it may be a good time to consider replacing the cylinders.
replacement is the opposite of the above.
if the system is disc, same as above for removing the wheel.
the disc calipher will be held on to the car by a couple of bolts. remove to free calipher.
the pads can now be removed.
be sure to have either the drums or the disc resurfaced prior to re-assembly.
it is relatively easy to change either, doable for a shade tree mechanic with a manual.
many autoparts stores offer free turning with purchase of pads or shoes. buy quality pads or shoes. keep everything clean. use brake cleaner before installing brake components.
depending on manufacturer of pads/shoes there will be a short break in period.How to change rear brake pads and drums?you need to be more clear on your question. If you have brake pads then you don't have drums you have rotors. I you have drum brakes the you have brake shoes. need to say which one it is because pads are easier then shoes
