The introduction in this book is quite good. It will tell you to your face that you might want to consider not using FreeBSD and I found that to be quite brave, resulting in this purchase.
Chapters 1-12 run through like a typical OS book. It goes into details about what is what and where everything is and thier use. Makes great bed-time reading.
After these chapters it makes a great segway into backups, followed by printers to local networking to internet connections, servers, firewalls email servers and clients. After all of this they make an about-face back to whats on your hard drive in regards to config files, keeping up to date, the kernel, XFree86. This is a great way of saying "first, you should learn how to use this OS before you start changing it." If you get this book, you will notice that is starts out explaining network configurations and saves updating and customizations for last. Great way to learn.