Most of the 2.0 books are more than a year old. While this may not seem like
much, the core has changed enough to make a difference in some areas. This
does not mean there are not some good books, but it should be considered. The
newest book is Pro ASP.NET in C#, which I have not even looked at, nor am I
familiar with the authors.

Dino Espositos MS Press book is rather nice, as Dino has a good grasp of the
technology. It does not have a lot of depth. The Homer, Sussman, Howard book
is also nice. It is not quite as easy to read as Espositos book, but has a
bit more depth. If you go to the first book (A first look at ASP.NET 2.0) you
will find a good deal of material that no longer applies, at least not as
written.

The Developer's Notebook/Workbook series is interesting, but it is a bit
disjointed. It is designed that way and many people like the rambling way
technology is uncovered. I have only had a brief exposure with the book, as
it does not fit my style.

WinForms and Language basics:
If you are heading to C# 2.0, consider Troelson. He has a nice style and
does a great job of covering concepts. I reviewed one of his 1.1 Framework
books and it was, by far, one of the easiest Tech reviews I have done, as
Troelson is very thorough and checks his work. If you want to get to the core
of the language (C#), Gunnerson writes a nice book, as well.

If you can wait a bit, there are a plethora of books coming out closer to
the final release.