Safari Tech Books Online (PennKey required for access) offers several books on web design topics such as HTML, CSS, Javascript, as well as at least one Dreamweaver-specific book, "Dreamweaver CS3 The Missing Manual"

NOT for the easily offended.  In each episode (4-5 minutes), Donnie Hoyle teaches tricks in Photoshop while insulting the viewer and droning on about how much his life sucks.  If you're watching at work or around children, be sure to wear headphones.  :)