I spent a week going through this book, to brush up my mathematics. Most of the text is made up of annotated worked examples and numerous exercises. the text which precedes this is extremely brief - mostly a bullet-pointed summary. This format, whilst useful in a classroom setting, can be inadequate if you are teaching yourself.
I have a few problems with the way some of the content is presented. For instance in chapter 2 (Numerical solution of equations) for problems involving linear interpolation, I found that the choice of similar triangles chosen only made the arithmetic more difficult. I also felt that this type of presentation was teaching procedural techniques, and that weaker students would be learning this method parrot fashion. You have the same sort of thing for finding the inverse of a matrix in chapter 4.
Overall I found the book easy to follow using the worked examples. In my case, I skimmed through each chapter doing a few problems on the way, and then did the mixed exercise for each chapter. I found the CD-ROM extremely useful, as there were some occaisions when I obtained the wrong answer. Checking on the disk is a lot quicker than finding my silly mistakes. Also, it occured to me that if I were to teach this unit, the CD-ROM would be brilliant for displaying examples on the board, and so would dramatically cut down what I would have to write on the board.
The inclusion of the CD-ROM much improves the product and gives the buyer a feeling that they have much better value.