Chapter 1, Installing and Configuring Active Directory, will give you deep understanding of AD DS and how to install and configure AD DS in different scenarios.
Chapter 2, Managing and Maintaining Active Directory, covers advanced AD DS configuration and services that are tightly related to Active Directory environments, such as Active Directory Domains and Trusts and Active Directory Sites and Services.
Chapter 3, Creating and Managing Group Policy, will explain you what a Group Policy is, how to configure and manage Group Policy Objects (GPOs), and how to implement GPOs in different environments.
Chapter 4, Understanding and Implementing Active Directory Certificate Services, explains the Public Key Infrastructure (PKI) and AD CS and covers how to implement and manage AD CS in Windows Server 2016.
Chapter 5, Understanding and Implementing Federation and Rights Management, covers the implementation and management of Microsoft's federated identity solution, AD FS, and Rights Management solution implementation using AD RMS.