Here’s a great tutorial explaining Object Oriented Programming for PHP developers. PHP gets better and better with each new version, some of this material may be new for developers used to script-style programming.
http://net.tutsplus.com/tutorials/php/object-oriented-php-for-beginners/
A very important place to see example code samples for PHP developers. This might be your single most important resource for PHP code usage explanations and examples.
http://www.php.net
Here’s a great tutorial for Opengl ES on Android. If you’re frustrated by the quality of the tutorials out there, here’s some very good examples based on the popular Nehe tutorials.
http://insanitydesign.com/wp/projects/nehe-android-ports/
This might be the most popular magazine for web design, its updated regularly and packed full of excellent explanations on design and methodologies.
http://www.smashingmagazine.com
An excellent resource for design with a ton of Photoshop tutorials. There’s a ton of inspirational material if you’re needing some ideas.
http://9tutorials.com/
A ton of free tutorials for modeling, rendering, and mapping. I highly recommend the Joan of Arc tutorial from back in the day, I taught myself some very important techniques using this tutorial in the past.
http://shop.3dtotal.com/catalogsearch/advanced/result/?name=joan