most of it has been covered pretty well
my tips:
carry two tubes + patch kit + tire boot, only patch on the road as a last resort. pcad knows, every once in a while you'll have one of those days where you won't feel stupid for carry all that stuff. i also throw a razor blade in the patch kit in case i need to make a boot from found objects or cut my boot in half. that happened a little while ago to me, i hit a rock and cut both sidewalls and flatted both tires. i didn't have to walk or call anyone.
patch a bunch at home.
wait for the glue to dry. i sand and glue 3 or 4 tubes. by the time i'm done with the last (~5 minutes), i can put the patch on the first.
i use a pen to mark small holes, i draw a long line radially and another in the direction of the tube past where the glue will go do i can find the hole so i can center the patch.