Porsche 911 Buyer's Guide by Randy Leffingwell is a comprehensive resource for prospective buyers and enthusiasts of classic Porsche 911 models produced between 1965 and 1998. The guide offers detailed year-by-year analyses, highlighting technical specifications, performance data, typical parts costs, and known issues for each model year. A notable feature is the "Garage Watch" section, which outlines common faults and areas to inspect, aiding readers in making informed purchasing decisions.