This is a guide on how to build business systems for entrepreneurs and business managers. This guide does not try to reinvent the wheel on systems design and it does not try to reveal new knowledge on systems. This guide rather focuses on structuring the basic essentials of systems into a framework that can easily and practically be implemented in any business. This guide focuses less on technology but emphasizes on equipping entrepreneurs and business managers with the tools to build systems that can run and grow any business. The guide has been written in the most simple terms with the primary purpose of explaining how the elements of a system work and why they matter to a business.