Kaufman, a former middle manager at Proctor & Gamble and founder of personalmba.com, argues that those interested in business would be better served by skipping the M.B.A. and focusing on the critically important concepts that really make or break a business. According to the author, much of what is taught in business schools is outdated; you're better off saving the expense and finding other ways to learn about these core principles--which Kaufman synthesizes--in such areas as value creation, marketing, sales, and finance. He also explores the psychological side of business and examines how consumers take in information, make decisions, and decide what to do or not to do. Acknowledging the panoramic overview his approach necessitates, he includes a fairly lengthy list of sources to seek out if more information is needed. While Kaufman's rallying call will not eradicate the need or desire for M.B.A. degrees, he does provide a surprisingly solid alternative full of information that even those already in the workplace will respond to. (Dec.)