By recommendation from one of our KRneters I bought the excellent book: Simplified Aircraft Design for Homebuilders - Author Daniel P. Raymer. (see site www.aircraftdesign.com).
However, for those interested in a deep dive regarding design of small planes I would like to recommend the wonderfull book from Darrol Stinton,: The Design of The Aeroplane, 619 pages, published by BSP professional books, printed in Great Britain by William Clowes Limited. Mr. Stinton, Aeronautical Engineer, RAF retired pilot, and test pilot-surveyor at Farnborough for the British Civil Aviation Authority did a very nice job. Hope you will find this book at Amazon Bookstore. Regards for all, Cláudio Holanda [email protected]

