Mathematica has defined the state of the art in technical computing for nearly a decade, and has become a standard in many of the world's leading companies and universities. From simple calculator operations to large-scale programming and interactive document preparation, Mathematica is the tool of choice at the frontiers of scientific research, in engineering analysis and modeling, in technical education from high school to graduate school, and wherever quantitative methods are used.
Stephen Wolfram is the founder & CEO of Wolfram Research, creator of Mathematica, Wolfram|Alpha & Wolfram Language, author of A New Kind of Science and other books, and the originator of Wolfram Physics Project.
The part two of this book give a in depth introduction to the internal representation and evaluation of the Mathematica expression, which is normally not touched by other Mathematica book. And is actually extremely useful if you want to learn Mathematica well.
Although this book is based on V5, since the concise of the Mathematica language, it is still of high value to every people who want to learn Mathematica deeply.
Highly recommended to every one who want to learn Mathematica.
Great handbook for someone looking to blend mathematics and computer science. Good balance between instruction and practices/examples. A little outdated, but still teaches the core principles and how to guide oneself through the program.