I would definitely recommend this book.  I haven't looked at the other C# cookbooks out there, but I have looked at many of the beginner and comprehensive books out there, like Professional C# and Inside C#.  Inside C# is still my pick for a beginner's introduction to C#--a beginner with C#, not a beginner to programming.  However, for reference, once you've been using C# for six months or a year, I would definitely recommend O'Reilly's C# Cookbook.  And I'm pretty sure in 12-18 months I'll be picking up a v2 edition that includes coverage of all the cool new stuff coming, like generics, shared classes, anonymous methods, etc.

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