Digging into WordPress by Chris Coyier & Jeff Starr is a wonderful WordPress resource website. DigWp.com is a WordPress blog centered around tutorials, guides, hacks, tweaks, designing, and etc… for WordPress powered sites. As a beginner WordPress user, I use DigWp as my backbone for understanding WordPress in every aspect. The blog is a great start to begin writing effective WordPress code but the book really got me rolling, it’s the ultimate guideline for an effective WordPress coder. More than 400 full-color pages of hardcore WordPress action. I highly recommend buying the book, Digging into Wordpress...