non fiction

If you actually want to learn syntactic theory this is a good book. However, it's main focus would be for machine use. The methods presented are typical "paper and pencil" methods.

This book covers everything from the mundane, like how the file explorer in Windows XP works, to the complex, like how the scheduler works in UNIX-systems.

Learning GNU emacs is the best textbook available teaching emacs - the best editor there is. Both beginners and experienced emacs users will find this book useful.

This is something as unusual as a sucsessful Norwegian computer book. The authors have done a great job writing this book. It's very informative, you learn what you need to learn.