Jag-a little detail to the above.
If you are sitting on the bike-the pedal on the right side should screw out like a normal screw-if you are staring at it like a clock-it unscrews counterclockwise-the normal way.
The left pedal-screws out clockwise-bazz akwards.You turn it the way that would normally tighten a common screw.
This bassakwards arrangement is to prevent the normal pedaling motion from loosening the left pedal.Luck,Charlie PS-This was one of the least of my mechanical fups.Everyone who just has at the bike has done this one..Now some candyazzes read the instruction manual or go to a tool site for info,but that is for strictly old gimps. "We don't need no stinkin' manuals!"
Just kidding-the park tool site is great.