In addition to the Autodesk discussion groups, another place to obtain information is from the Autodesk web site:
Autodesk DWF Viewer
http://www.autodesk.com/dwfviewer
This is the starting page for information about the free Autodesk DWF Viewer.Autodesk Design Review (formerly known as Autodesk DWF Composer)
http://www.autodesk.com/designreview
This is the starting page for information about Autodesk Design Review. A tutorial is available on http://www.autodesk.com/designreview-tutorial.Autodesk DWF Writer
http://www.autodesk.com/dwfwriter
This is the starting page for information about the free Autodesk DWF Writer.World of DWF
http://www.autodesk.com/dwf
This is the starting page for information about the Design Web Format itself.DWF Gallery
http://www.autodesk.com/dwf-gallery
This is a collection of sample DWF files submitted by Autodesk customers.DWF Customer Showcase
http://www.autodesk.com/dwf-customers
This is a collection of sample DWF files and associated success stories about Autodesk customers.Autodesk DWF Developer Center
http://www.autodesk.com/dwf-developers
This is the starting page for the DWF Developer Center. It has a variety of information as well as links that eventually lead to the DWF Toolkit.Autodesk DWF Toolkit
http://www.autodesk.com/dwftoolkit
This is a shortcut for navigating to the download page for C++ programmers to obtain one of the freely available DWF Toolkits.