The book is very good, but you have to already have reviewed those forgotten math concepts such as simple algebra and a few other things that the author purposely skipped to get to the details of the book.

Unfortunately I ended up returning it after realizing I probably need a book not only to refresh some of the concepts and formulas, but also give me more detailed exercises.

I read a few chapters but felt lost without a guide. But the book is a great reference for those already familiar with most mathematical concepts. The author does explain how to apply them very well and the examples are of good use.

Before purchasing this book, especially if you're entering the science field or starting college courses in science, make sure to get familiar with algebra, trigonometry, calculus, etc. before diving into this helpful book. Then buy it! Otherwise for those already into it, it's a very small, organized and great book that you can carry in a small purse for those who commute on public transportation.