Foreword

Apart from its applicability for everyday work, GNU/Linux is a great way to learn about operating systems. The Free Software license allows you to take the software apart, see inside, and understand how it works. You can also change the software to fit your needs. It can make you feel like a child happily taking a colorful and complex toy apart into thousands of little gears and switches, just to see how it functions, disregarding the fact that it may be very difficult to ever reassemble that toy again. The difference with GNU/Linux, of course, is that you can work on a copy of the software source code and won't break the original. And sometimes, while reassembling, you can build something entirely different and colorful without even planning to.