Make sure to check out Mr. Tuttle's blog site (http: //thetuttlemathpsm.com/), for winning picks and much more. Plus, it's a wonderful way to read some very lengthy excerpts of all three of his horse handicapping books currently selling on Amazon.com. This book is a bit more "advanced," and tackles a lot of "Now" issues; as it relates to horse racing. Thank You, to all of my Fans Signed, Joseph J Tuttle