If you want to start learning PHP and MySql, the first step is to setup complete environment on your local computer. This will include Apache web server with PHP support and MySql database server.
Fun, yet very useful tutorial, where you manipulate a photo in a way it will look like you're standing next to Brad Pitt or any other person in that matter.
The newest findings suggest that a cosmic impact of an asteroid or comet, indeed was the reason why the once mighty dinosaurs don't roam the planet Earth anymore.