Great. My business is in Wichita and we actually live in Derby, just a few miles south. Funny how people here think that Derby is far away from Wichita and we moved here from Roswell, GA, which is about 4 times the distance from Atlanta than Derby is to Wichita.
Here is a great book I would recommend, so is this one and this one. The O'reilley (middle link) has a lot of great basic functions and gives you a good basic overview of the language, so does the first one as well. The other two have a lot of good examples of real-world applications, such as ecommerce, etc.
The best thing about being with Glowhost here is that your server is already set up for you - mySql and PhP. Having a local installation and having gone through trying to get Apache to talk to PHP to talk to MySQL, let me tell you that you've already got a leg up.
start with the basics and look at the examples on the php.net site. Download the php manual from the site as well - it is my primary resource. Another good forum that I use frequently when I get stuck is here. It is called the PHP Developers Network and there are a lot of good developers there to assist and a very good and friendly community like it is here in these forums.
Bottom line is, go write your first script and get a move on!
PHP Code:
<?php
echo "Hello World";
?>
Charles