Free .NET CF Pocket Guide @ TechEd
It seems that the .NET CF team is giving away Wei-Meng Lee's new book
.NET Compact Framework Pocket Guide (O'reilly 2004) together with the Windows Mobile Developer Resources DVD at TechEd. The DVD contains device SDKs (integrate with VS.Net 2003), articles and code examples. The book is very small (no bigger than the DVD jacket) and only has 100 pages. But I think it is very well written. If you are an experienced .NET developer, the book can get you started in device development in a matter of minutes. It has three application tutorials (database, web services, P/Invoke and bluetooth) that you can try out quickly with the SDKs on the DVD. The book also contains valuable information about how to build and customize CAB deployment files for various devices.
I wish other companies could provide developer marketing material this helpful to developers!