Stokely M. FreeBSD Handbook

3rd edition: Walnut Creek, 2004 — 537 p.
FreeBSD is a powerful, professional quality Unix-compatible operating system.
The FreeBSD Handbook is a comprehensive FreeBSD tutorial and reference. It covers installation, day-to-day use of FreeBSD, and much more, such as the Ports collection, creating a custom kernel, security topics, the X Window System, how to use FreeBSD's Linux binary compatibility, and how to upgrade your system from source using the "make world" command, to name a few.
This Handbook is produced by the FreeBSD Documentation Project, a volunteer organization made up of hundreds of people cooperating over the Internet. It is written by people that use FreeBSD everyday, and are most familiar with it.