J.D. Ponce 
J.D. Ponce on Albert Einstein: An Academic Analysis of The Special and General Theory of Relativity [EPUB ebook] 

This exciting essay focuses on the explanation and analysis of Albert Einstein’s The Special and General Theory of Relativity, one the most influential works in history and whose understanding, due to its complexity and depth, escapes comprehension on a first reading.
Whether you have already read The Special and General Theory of Relativity or not, this essay will allow you to immerse yourself in each and every one of its meanings, opening a window to Einstein’s scientific thought and his true intention when he created this immortal work.