Steve, by now you've read plenty and probably have come to the conclusion that there are multiple ways to successfully smoke spare ribs. Some require more attention and effort than others.
If kind of new to this, I would recommend starting as simple as possible:
Per jcollins, trim them as shown.
Remove the back membrane getting it loose at the end by sliding a butter knife in between it and the bone. Grab it with a piece of paper towel and pull - pretty simple.
Put on your rub(s) of choice
Smoke between 225-250° (I tend to say around 225)
It then becomes relaxation / lubrication :) time. You are looking for meat pull back off the bone of 1/4 to 1/2 inch.
Depending on the meat, temp, etc.. that can be anywhere from 4--6 hours but I usually see it around the 5+ hour mark.
BTW: I do spray them with apple juice every 40 min or so starting with hour 3.
If you want to sauce them, do so with approx 30 mins left.
Matt