Just saw this, and found it quite useful… it’s titled: An Introduction to Using Patterns in Web Design, by 37signals.
It’s a simple way to sketch out web design, in an organized way. Basically, they go through these steps:
1. List stuff that needs to go on the page
2. Figure out what’s related
4. Design each part
5. Put the designed parts together
6. Actually create the page
Go read the article and try it out!