.NET in Samples by Skilldrive is a really interesting free eBook to download immediately if you are a .NET programmer.
In its 250 pages the book presents many technologies on .NET platform like security, cryptography, WMI, networking, IO and others, with lots of examples ready to use. PDF or DOC versions are available to download.
I'd like only to know if the book will be improved with a good Whidbey section (as you can read from their site) or this is the final version.
Thanks to Ohad Israeli for the link.