The list author says: "I have been very satisfied with the offerings of O'Reilly Publishing, having purchased books from them since 1994. For that reason, my recommendations favor many of their books. I also recommend the "unleashed" series from Sams Publishing."
"For websites that need to display and update large amounts of data you need a real database. mySQL is often the database engine chosen by web hosting companies to offer to their customers. This book covers A-Z of installing and using a mySQL database engine. Not for SQL novices, but a good reference."
"If you want to be a serious developer of web applications, you will need to have a test platform to polish your designs. Install FreeBSD (free download at freebsd.org) on an old desktop you have kicking around that can't run the newest OS from Microsoft Now you can test your creations that need perl, php, mySQL, and perform other tasks such as version control of projects. All this for free."