Depending of your level of knowledge in Linux, you can read this book from the start to finish or each chapter which may be of interest to you. Each chapter and section of this book appears in a manner that let you read only the relevant parts of your interest without the need to schedule a couple of day's reading.
Too many books available as of now take two pages to explain something that can be explained in two lines, I'm sure that many of you agree with my opinion. This book attempts a different path, in the sense, only the essential and important information that the readers are interested in knowing are explained in detail thereby eliminating all the nonsense. Though the fact that you can read this book in any order you want, there is a particular order that you could follow if something seem to be confusing for you. The steps shown below is what I recommend to facilitate a smooth reading.
Setup Linux in your computer
Remove all the unnecessary RPM package(s) during setup
Install the necessary RPM package(s) for compilation
Secure the system in general
Optimize the system in general
Install, recompile and customize the Kernel
Chapter 24 will guide you through this:
Install OpenSSL to be able to use encryption with the Linux server
Chapter 15 will guide you through this:
Install OpenSSH to be able to make remote administration tasks
Chapter 21 will guide you through this:
Install BIND/DNS as client or server depending of your needs
Chapter 22 will guide you through this:
Install Sendmail as client or server depending of your needs
Install & Configure the firewall script according to which services are installed in your system
Now for this step you will need to go through the book section wise to choose what you want.
Install any software you need later.