I'm a few chapters into the book and at this point... I'm in love.  There were some tricks I already knew but most are brand new to me and very helpful.  I got this book to help me brush up on my math skills and it's done more then that. At this point I am slowly but surely falling back in love with Math.  I recommend this book to anyone that wants to enhance their math skills and throw out the calculator, I believe the author jokes about this through out the book.<br><br>Besides being more then what I thought it would be Arthur Benjamin (Author) &amp; Michael Shermer (Author)have written it beyond well. Very to the point and very explanatory and helpful.