Being both a mechanical engineer and an absolute lover of physics, I have few words to describe what this book means. This book is simply the bible of field theory in
this world. However is not to everyone, it is a very hard book, rigorous mathematically talking, profound and definitive, this is that kind of book you only catch up and face it when you have a rigorous and a considerable knowledge of both physics and advanced calculus, obviously if you have neither one nor other, you'd better get another text, maybe an intermediate one. It is interesting that it starts with special relativity and finishes with general relativity; you'd better be good in tensor calculus. Landau left a legacy unequaled in terms of theoretical physics; all of his books on this series are way above average and absolutely definitive texts in theoretical physics.