Do you use design patterns in your daily development? You probably should, and if you don't you might start with reading some books on the subject. I would suggest one from Head First series, although not everybody is a big fan of this book. But I found it fun and easy reading that can trigger your curiosity and encourage you to dig dipper. It is written for Java developers, but language samples presented in the book are minimal and, if you don't understand Java, you can refer to this project for C# translation. More...