Check out this article that summarizes many of the existing resources.
We plan to publish a tutorial online soon as well.
Helping businesses become more effective, productive, and profitable through custom iPad/iPhone applications, FileMaker app solutions, and web site design.
A bunch is getting the look of your pages (like creating layouts, but with HTML). The scripting bits of PHP are added where needed. The CWP guides will help with that.
From there... is the CWP/tutorial still downloadable from FMI? Yes! you can get it here
And there are some books on the topic. Wow, I just checked Tim's link and he has some great resources!
But really designing your site is mostly the HTML and CSS.