More Effective C#: 50 Specific Ways to Improve Your C#
This is an interesting
book
to read in case your reading queue is empty
and you want to brush up some aspects of C# (2/3). I can't
recommend this book as a general reading, as it's way too
narrowed to specific subjects (or implementation of those).
Saying this, I really loved the introduction into
expressions and functional pieces in C#. It gives you the
hint what's going on, leaving a taste of more to read.
PS: Ismaƫl, thank you for letting us have it ;)