ribs, as is the case with all pork, are really easy. just buy baby backs from costco/sams, rip off the membrane from the back if they are still on there, lather with mustard, then cover with rub. cook @ b/w 240-280 for 3 hours, then load up with sauce and put back on smoker for the final hour. pull off at 195-200.
regular spare ribs take closer to 5-6 hours.