Geezer: If the car is relatively new and the brake pedal feels good to you AND it doesn't pull to either side under hard braking, I wouldn't mess with trying to adjust the brake shoes in back. It is becoming a lost art so you may want to eventually find a mechanic who can do it right, but no hurry if they're working OK.
The E-Brake can be easily adjusted right at the handle between the seats. Remove the e-brake boot and you'll see two threaded studs (#3 in Greg's big photo) that also have a slotted end. Put a screwdriver blade in the slot and tighten the 10mm nuts on both cables as close as possible to the same amount (tighten by 1/4 turns to keep track). Getting the adjustment grossly different between them may mean that the car might pull to one side if the e-brake is applied while moving. If all you ever do is use it as a parking brake, then don't worry about it, just get it so it feels "right" to you.
Just about everyone uses the cable ends in Greg's lower photo, simply because using cable clamps on shortened cables out back is impractical AND they slip. Those cable ends shown seem to work well, but the set screws need to be good and tight or the cable may slip out of the end of the terminator (Greg mentions this, too).