http://hubpages.com/hub/How-to-Dock-...ee-Simple-Tips
http://on.aol.com/video/docking-a-si...boat-517388808
http://www.boatinghowto.com/content/...-1-basics-235/
There's some good youtube vids on the topic too. For me, this info helped a lot, but nothing beats getting out there and practicing.
Early on, I'd find a quiet spot somewhere on the lake and practice maneuvering. Then I'd try the town docks on a quiet weekday afternoon.
Don't be afraid to ask for help. In my case, I'd much rather look like an incompetent boater who's concerned about doing the right thing over looking confident.