If you can't find your answer through the forums, or if you wish to contact me for any other reason, the best place to write is < books@sitepoint.com >.
We have a well-manned email support system set up to track your inquiries, and if our support staff is unable to answer your question, they send it straight to me. Suggestions for improvement as well as notices of any mistakes you may find are especially welcome.
And so, without further ado, let's get started!