When you realize you enjoy technical design and engineering you don't start learning it by trying to read space shuttle blueprints. Same thing here. Start by getting a book at a library, then try some simple projects on your own. Find a few blogs to follow. www.dzone.com is a very good development blog directory, you just have to find the section you are interested in (in your case PHP) and subscribe to its feed. I think I've also seen some PHP video courses / interactive tutorials available online.
Good luck!
Good luck!