This has some good info How to Bleed Brakes - Tips on Bleeding Brakes - Popular Mechanics
but, remember to have patience with it. If your pedal feels spongy at all then bleed again and again until its nice while driving. Not sure if they mention it or not but you may need to bleed all four if you get air trapped and can't seem to get it all out. Start with the farthest from the master cylinder (right rear) then do left rear, then right front, then left front. This process bleeds the lines from longest to shortest to help prevent air being trapped.
And, DO NOT let your master cylinder run dry. If it already did, plan to bleed the whole system. When its dry, it can pull air into the top of the system and play havoc on trying to bleed. Most of the time when this happens it causes a lot of frustration because the air is trapped at the beginning of the line and we bleed from the end of the line. Thus, we would have to bleed out darn near a cup and a half of fluid to get the air out. All along refilling the master cylinder res. so it does not go dry again.
In a nutshell,
2nd person pumps up the pedal and holds pressure on it.
Release the bleeder screw and air/brake fluid will shoot out.
Tighten it back snug, then tell them to release the pedal (if they release before you snug the bleeder screw it will suck air back in the bleeder)
repeat, repeat, repeat, until the pedal is solid from the first push.