Developer Resources
PHP
Here is an important page for PHP coders to spend some time with. And another on the pro side.
While a decent logging system like log4php is often better than step debugging, xdebug has a lot of features you'll wish you started with sooner. Zend does a good job of ramping you up with this xdebug tutorial.
Missing something from your default install of PHP/Apache? Here is a package manager you'll want to have a look at: PECL
Content Management Systems
The web's best index and 'kick the tires' site for open source content management systems.
Drupal
Here's a drupal feed of choice, a way to keep up to date on Drupal Modules. If you're looking for a theme, we suggest Theme.Drupaler.Net.
Looking to grok the table structure at a glance? Check the relationships between Drupal tables.
jQuery
| Getting Started | http://www.learningjquery.com/2006/09/welcome |
| jQuery methods reference | http://visualjquery.com/ |
| jQuery UI widgets | http://interface.eyecon.ro/ |
Web Design
| Fonts | on using fonts on the web |
| CSS | Some great tutorials |
| For Drupal | Using template.php well |
Subversion
| SVN Documentation | SVN. None of those other web tutorials beats this very good documentation, straight from the source. |