I like this book very much. This workbook instructs one how to work through the mathematical requirements of neural networks. By doing so the reader gets a good mathematical background of chaining through the mathematics and seeing the internal structure of many networks. This information is valuable if one is interested in programming your own neural networks. The 5-1/2 floppy disk accompanying the workbook is not usable, at least not to me. If you need to learn and work through the mathematics and chart the results of neural networks that is a great book to start with.