The SitePoint Tech Times
In addition to books like this one, I write a free, biweekly (that'severy two weeks) email newsletter called The SitePoint Tech Times.
In it, I write about the latest news, product releases, trends, tips, and
techniques for all technical aspects of Web development. If nothing else,
you'll get useful PHP articles and tips, but if you're interested in learning
other languages, you'll find it especially useful. Sign up to the Tech Times
(and other SitePoint newsletters) at http://www.sitepoint.com/newsletter/.