The tutorial is aimed at those who have some knowledge of programming, although you certainly don't have to be an expert. It is intended as a companion to the Tcl manual pages which provide a reference for all Tcl commands.

Tcl (Tool Command Language) is a dynamic programming/scripting language based on concepts of Lisp, C, and Unix shells. It can be used interactively,

We hope that a professional programmer or MIT student can breeze through this book in one evening. By the end of the evening, that person should have learned Tcl, learned a little something about the Web, and not have been bored.

Practical Programming in Tcl and Tk is meant as a practical guide to help the readers get the most out of Tcl and Tk and avoid some of the frustrations.