As for the big brother book (C# 4.0 in a nutshell), this small one retains the best qualities of it. Concise and precise treatment, targeted and functional examples.

There is only one chapter, composed of several subparagraphs. Fortunately there is a detailed index of 16 pages, so it's easy to find topics you are interested in. When a topic is what's new in version 4.0 of C#, is shown explicitly. The code samples are indented in a very compressed way, all in one line. The bookbinding is a little stiff. To test the code better would be download the LINQPad software; is very practical and immediate to use. The examples reflect chapters 2, 3 and 4 of the big brother book, then the readers who have already read that, will find an environment already known.