Dreamweaver CS4 and the other Creative Suite editions are now available for download from Adobe with the boxed editions coming soon. So, you might want to prepare by studying some Dreamweaver tutorials. I offer over 50 Dreamweaver tutorials on this site, but there are lots of other sites that have great tutorials as well. Some of my favorites include:
- Adobe Dreamweaver Support site
This is where I go first when I have a question about Dreamweaver. There are lots of great tutorials and articles. - WZ2K
This site has a lot of video tutorials for using Dreamweaver. They are easy to follow and fun, and cover all levels of tutorial. - DMX Tutorials
DMX Tutorials includes a lot of different tutorials for Dreamweaver including things like security and Ajax as well as the basic tutorials. - Dreamweaver Made Simple
They create videos to explain how to build websites. Their content focuses on Dreamweaver but it's more of a general Web tutorials site which uses Dreamweaver to build the pages. One thing to remember, they are focused on selling their product, so the tutorials often push that product. - WebThang
They have a lot of high level tutorials for using Dreamweaver.

I like to use Lynda.com. I really like the fact that I can get all the Creative Suite tutorials plus bonus design tutorials all in a consistent delivery method.
I second Lynda.com. Wonderful video tutorials, by various experts, about the entire Macromedia/Adobe suite. I even learned Coldfusion from Lynda.com. and CSS, and Design Elements, and SEO, and now WordPress. I’ve *happily* been paying her $25/month for over 5 years now! Everything I’ve learned about the WEB has come from Lynda.com … AND Jennifer Kyrnin at About.com of course!
As a developer, I cringe when I see Dreamweaver-created code with endless nested tables and numeral-named styles… (yah, that looks like style77 to me!)
I am sure it is possible to override these bad habits – but so many designers are still creating very Web 1.0 code with Dreamweaver.
In addition to some of the suggestions already stated, Safari Books Online is my favorite resource for learning not only Dreamweaver but anything related to IT. A $40/mo subscription price provides full access to Safari’s extensive library of books, videos, tutorials, previews, and other tools. Well worth the subscription price, however, Safari Online also has lesser plans for the more budget conscious.
Not strictly a tutorial site, but rather a forum for Dreamweaver plus tutorials.
http://www.dreamweaverclub.com
Has been around for years and always helpful.
Thesitewizard.com has a pretty good beginning tutorial.
The Interactive Online Classroom offers instructor-led, project-based online Dreamweaver training classes. You get an instructor who will answer your questions and give you feedback on your work and at the end of the class you will have created a website you can publish.