You can read the first four chapters and try the exercises that are in them. They are posted on the sitepoint.com web site, and also at the mysql web site.
Here is the link that will take you to them at mysql.com:
php/mysql book by Kevin Yank
I did the exercises in the first four chapters. The way the book is laid out makes it easy to learn both php
and mysql. I think I'm going to buy this book.