You can read this book from cover to cover if you like, but each hack stands on its own, so feel free to browse and jump to the different sections that interest you most. If there's a prerequisite that you need to know about, a cross-reference will guide you to the right hack.
You can attempt most of the hacks in this book with no more than your brain, or at least no more than pen and paper. Many contain references to additional material available in other books or on the Web.
A few hacks also include source code for short computer programsâmainly Perl scriptsâthat you can use as thinking tools. Don't worry, though; you don't need any programming experience to use these hacks. The "How to Run the Programming Hacks" section later in this preface will get you started, and the hacks themselves explain in detail how to install and run the code.
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