Feel free to post your questions, hint, tricks, etc here. Every category of web development is welcome here, whether it's server-side or client-side scripting, HTML, XML, web design, CSS, graphics, etc. But please don't post matters like: "Please fix my script for me", "How to decode ioncube/zend coverted scripts?", etc. because we all have things to do ourselves

Accepted questions would be of this kind: "What does this error message mean?", "Where can I find good tutorials on PHP, JavaScript, etc.", "How can I get this kind of effect/feature working?", etc.
The technologies I'm able to help you with are:
PHP
(D)(X)HTML
CSS
JavaScript (AJAX, JSON)
XML
MySQL
Here are some opensource advertisements for interested parties:
JavaScript frameworks:
jQuery: jquery.com (my favorite)
Prototype + scriptaculous: prototypejs.org + script.aculo.us
Mootools: mootools.net
The Dojo Toolkit: dojotoolkit.org
More can be found by searching Google with this link:
http://www.l.google.com/search?hl=en&q= ... tnG=Search
PHP frameworks:
PEAR: pear.php.net (my favorite)
Zend Framework: framework.zend.com
CakePHP: cakephp.org
CodeIgniter: codeigniter.com
More can be found by searching Google with this link:
http://www.l.google.com/search?hl=en&q= ... tnG=Search
Using a framework will save you a lot of time (and perhaps money) in development but this is not really recommended for developers getting into a technology as it won't increase your knowledge of the technology but only of the framework and perhaps of web development in general.
Happy developing!