In this second edition of Git Essentials, I slightly changed my approach in explaining how Git works; instead of explaining with words and figures, this time I want to show you how Git works internally with only the help of the shell, allowing you to follow all the steps on your computer and hoping that these will be clear enough for you to understand.

Once you know the fundamentals of the Git working system, I think the rest of the commands and patterns will be clearer, allowing you to accomplish proficiently your daily work, getting out of trouble when needed.

So, it's time to start digging inside the true nature of Git; in this chapter, we will get in touch with the essence of this powerful tool.