If you visit www.sitepoint.com and search for the Database Driven Website Using PHP & MySQL, this guy is great and the book is cheap to buy online. Kevin Yank guides you through step by step from installing mysql and php and writting very basic SQL.
Another good one is the SAMS Teach Yourself PHP in 24 hours - amazon.co.uk or amazon.com. Covers the basic and goes on to some more difficult and complex stuff later on.
By the end of those you will be wondering what you were bothered about.
The PHPBuilder site is very good as well and the staff here certainly know there stuff and are very helpfull.
Hope This Helps and Good Luck!!