You can spend big bucks purchasing the three volume Ambrosius two man and three man mechanics books from Referee Magazine.......
OR........
You can purchase the $15 Two-Man Mechanics manual used in the education of potential minor league umpires at the Jim Evans Academy of Professional Umpiring. The manual can be purchased from them or from PBUC. [go to [url="http://www.umpireacademy.com]"]www.umpireacademy.com][/url]