Design Patterns Tutorial

To start over, i am going to begin blogging on Design patterns, starting with Gang Of Four. The way i am going to approach is to pickup an example of the sample real world project and design without patterns, and explain the pains without using the patterns. And next refactor the design using patterns one by one to make it better design.

In the forth coming sessions, we will design a web site for a fictitious car deeler named DOOP. no, its not dupe. its DOOP.. short and mixed form of Design Patters and OO. Before we start making actual requirement analysis, design without and with patterns, you may want to understand what design patterns are all about and how to go about using them.

Here are some online catalog of patterns.
http://patternshare.com/
http://www.dofactory.com/Patterns/Patterns.aspx

Few books i recommend :
Design Patterns by GoF
Head First Design Patterns