This book was designed and written both for people new to Perl/Tk and those who are familiar with it. How you approach the book depends on which category best describes you.
Perl/Tk novices should probably start at the beginning. This book is designed to lead you into topics by building a foundation of knowledge. We’ll start with a Hello World example in Chapter 1, and from there move into geometry management and the standard widgets. Using Perl/Tk is not really that hard once you understand the fundamentals of how it works.
Experienced programmers should feel free to skip around at will. We recommend reading through Chapter 2 so you have a complete understanding of how the geometry managers work. Then skip around to the different sections in which you are interested. This book has quite a few examples that will give you ideas on how to use Perl/Tk in different ways.