This collection of books provides thorough yet accessible coverage of classical mechanics, an old subject that is at the base of all of physics but encounters rapid development in recent years. Lagrangian mechanics and Hamiltonian mechanics are being used extensively in explaining classical mechanics concepts. With detailed derivations and explanations, this book series targets undergraduates and graduates in Physics and applied mathematics and provides focused guidance for their studies by repeatedly emphasizing how various topics are tied together by common physics principles.