Michael Stone, author of "Markup & Profit: A Contractor's Guide Revisited" and the online class Profitable Estimating has more than five decades of experience in the building and remodeling industry. Michael offers business management and sales training assistance to construction-related companies with books and training programs available on his website. He can be found on the web at www.markupandprofit.com or by email at info@markupandprofit.com.