Book on Gravity
The best book on gravity may be my own book: The Universal Force Volume 1 – Derived From A More Perfect Union of the Axiomatic and Empirical Scientific Methods available from Amazon.com and CreateSpace.com for $14.95 plus shipping. At Amazon.com you can read portions of the book for free.
In this book the force of gravity is derived from electrodynamics and has a second term never before associated with any previous theory of gravity. This term causes gravity to be quantized such that it predicts the modern version of Bode’s Law discovered by Stanley Dermot. It also predicts the Cosmic Microwave Background Radiation and the redshift data of Hubble. It explains the expansion of the Earth, moon, stars and the universe as a whole. It explains the higher than expected velocity of the outer arms of spiral galaxies without resorting to inventing dark matter and dark energy. It explains the higher than expected velocity of Pioneer 10 and 11.
This is a classical type theory of gravity and is derived from the universal force law as a secondary effect between vibrating electric dipoles in atoms and elementary particles. The book defines mass for the first time in the history of science. Also charge is defined. Previously these quantities were merely constants in force equations of unknown origin.