Energy is the capacity to do work. Energy comes from various sources, such as fossil fuels, renewable sources, nuclear reactions and more.Energy is measured in joules (J) in the International System of Units. Energy exists in different forms,including kinetic, potential, thermal, chemical, electrical, radiant and nuclear energy. The law of conservation of energy states that energy cannot be created nor destroyed, it can only change from one form to another. Energy can be converted from one form to another thorugh different processes, allowing it to be utilized for various purposes. "Energy Basics" offers a comprehensive guide to understand the fundamental principles that govern the world of energy. In this book, we embark on a journey to explore the essence of energy and its significance. This book seeks to demystify the complexities of energy by delving into its various forms and transformations.