This handbook covers basic concepts in mechanical engineering and mechatronics, including stress and strain, mechanics of solids, internal combustion engines, refrigeration, fluid mechanics, control systems, actuation, robotics, electro-mechanical systems, hydraulics, and more. Using step by step examples and numerous illustrations, the book is designed with a self-teaching methodology, including a variety of exercises with corresponding answers to enhance mastery of the content. Mechanical engineering and mechatronics concepts provide the skill sets in cross-disciplinary subjects which are needed in modern manufacturing industries.