Chapter 1, Getting Started with Git, shows the reader all the (simple) steps they need in order to install Git and do their first commit.
Chapter 2, Git Fundamentals - Working Locally, discusses how working locally reveals the essence of Git, how it takes care of your files, and how you can manage and organize your code.
Chapter 3, Git Fundamentals - Working Remotely, covers how working remotely moves your attention to the collaborating side of the tool, explaining the basic commands and options you use when working with remote repositories one by one.
Chapter 4, Git Fundamentals - Niche Concepts, Configurations, and Commands, focuses on niche concepts and commands, completing the basic set of Git commands you need to know, giving the reader some more weapons to use in difficult situations.
Chapter 5, Obtaining the Most - Good Commits and Workflows, gives the reader some hints about common ways to organize source code within Git, helping them to develop good habits every developer should adopt.
Chapter 6, Migrating to Git, takes you through a way to give a hand to developers who use other versioning system, such as Subversion, to manage the transition phase into Git.
Chapter 7, Git Resources, offers some hints, based on the author's personal experience, which could be of interest to the reader.