Smart Home, or the field of how to make your home intelligent, is a vast subject. So, to get started, it is necessary to lay the foundations, to understand the possibilities, the goals, the stakes of smart home. Indeed, smart home has had a bad reputation for more than thirty years, and for many people, smart home rhymes in core with expensive and complicated. However, this world has evolved enormously, and very affordable solutions, and very simple to implement, exist today. So I propose you this series of four articles to start well, as well as a presentation of my book, which will be the ideal complement to understand this exciting world.