If you would rather follow a tutorial, then check out http://www.devshed.com (this covers PHP and others) or http://www.phpbuilder.com or just do a search on google for PHP Tutorials.

Especially look into how PHP integrates with MySQL so you can program database powered websites. If you are the type of person who likes to dive in the deepend, try downloading some basic scripts from http://www.hotscripts.com and/or http://php.resourceindex.com and start ripping apart the code to see what's being done.