A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Ducruy Jacques
Date: 2015 Aug 8, 02:49 -0700
I am agree with Dave : the book of Mary Blewitt is the simplest book about this subject.
I add that, in the first edition (1950), the tables used for calculation of altitude and azimuth are the ANT (Astronomical Navigation Tables), instead AP3270 (or HO 249). The tables ANT was used by Allied Air Force, before the publication of HO 249.