Books and Articles Online
On this site
All the documentation on this site can be downloaded in a variety of different formats (HTML, Postscript, PDF, and more) and compression schemes (BZip2, Zip) from the FreeBSD Download site.
Archived copies of the FreeBSD documentation (articles, books, and textinfo manuals) are also available online at http://docs.FreeBSD.org/doc/.
This documentation is provided and maintained by the FreeBSD Documentation Project, and we are always looking for people to contribute new documentation and maintain existing documentation.
Papers, presentations, and videos about FreeBSD are archived and catalogued on the FreeBSD Papers website.
Books
A project model for
      the FreeBSD project (dev-model)
      A formal study of the organization of the FreeBSD project.
The FreeBSD FAQ
      (faq)
      Frequently Asked Questions, and answers, covering all aspects of
      FreeBSD.
The FreeBSD
      Handbook (handbook)
      A constantly evolving, comprehensive resource for FreeBSD
      users.
The
	FreeBSD Developers' Handbook (developers-handbook)
      For people who want to develop software for FreeBSD (and not
      just people who are developing FreeBSD itself).
The FreeBSD
      Architecture Handbook (arch-handbook)
      For FreeBSD system developers.  This book covers the
      architectural details of many important FreeBSD kernel
      subsystems.
The Porter's
      Handbook (porters-handbook)
      Essential reading if you plan on providing a port of a third
      party piece of software.
Chapter 2
	of "The Design and Implementation of the 4.4BSD Operating
	System" (design-44bsd)
      Donated by Addison-Wesley, provides a design overview of 4.4BSD,
      from which FreeBSD was originally derived.
The FreeBSD
	Documentation Project Primer for New Contributors
      (fdp-primer)
      Everything you need to know in order to start contributing to
      the FreeBSD Documentation Project.
Articles
Why you should use
	a BSD style license for your Open Source Project
      (bsdl-gpl)
      Describes the benefits of releasing code under a BSD
      license.
Building
	Products with FreeBSD (building-products)
      How FreeBSD can help you build a better product.
The
	Committer's Guide (committers-guide)
      Introductory information for FreeBSD committers.
Contributing
	to FreeBSD (contributing)
      How to contribute to the FreeBSD Project.
The List of
	FreeBSD Contributors (contributors)
      A list of organizations and individuals who have helped enhance
      FreeBSD.
CUPS on FreeBSD
      (cups)
      How to setup CUPS with FreeBSD.
Explaining
	BSD (explaining-bsd)
      An answer to the question ``What is BSD?''
Filtering
	Bridges (filtering-bridges)
      Configuring firewalls and filtering on FreeBSD hosts acting as
      bridges rather than routers.
Fonts and FreeBSD
      (fonts)
      A description of the various font technologies in FreeBSD, and
      how to use them with different programs.
How to
	get the best results from the FreeBSD-questions mailing
	list (freebsd-questions)
      Tips and tricks to help you maximize the chances of getting
      useful information from the -questions mailing list.
Build
	Your Own FreeBSD Update Server
      (freebsd-update-server)
      Using a FreeBSD Update server allows a system administrator to
      perform fast updates for a number of machines from a local
      mirror.
Writing a GEOM
	Class (geom-class)
      A guide to GEOM internals, and writing your own class.
Implementing
	UFS journaling on a desktop PC (gjournal-desktop)
      A guide to create UFS partitions configured with journaling for
      desktop use.
Mirroring FreeBSD
      (hubs)
      The all in one guide for mirroring the FreeBSD website,
      FTP servers, and more.
Independent
	Verification of IPsec Functionality in FreeBSD
      (ipsec-must)
      A method for experimentally verifying IPsec functionality.
LDAP
	Authentication (ldap-auth)
      A practical guide about setting up an LDAP server on FreeBSD and
      how to use it for authenticating users.
FreeBSD Support
	for Leap Seconds (leap-seconds)
      A short description of how leap seconds are handled on FreeBSD.
Linux
	emulation in FreeBSD (linux-emulation)
      A technical description about the internals of the Linux
      emulation layer in FreeBSD.
FreeBSD Quickstart
	Guide for Linux Users (linux-users)
      An introductionary guide for the users that came from Linux.
Frequently
	Asked Questions About The FreeBSD Mailing Lists
      (mailing-list-faq)
      How to best use the mailing lists, such as how to help avoid
      frequently-repeated discussions.
Introduction to
	NanoBSD (nanobsd)
      Information about the NanoBSD tools, which can be used to create
      FreeBSD system images for embedded applications, suitable for
      use on a Compact Flash card (or other mass storage medium).
FreeBSD First
	Steps (new-users)
      For people coming to FreeBSD and UNIX� for the first time.
Pluggable
	Authentication Modules (pam)
      A guide to the PAM system and modules under FreeBSD.
OpenPGP Keys
      (pgpkeys)
      All of the OpenPGP keys for FreeBSD.
Port
	Mentor Guidelines (port-mentor-guidelines)
      Guidelines for new and/or potential port mentors and
      mentees.
FreeBSD
	Problem Report Handling Guidelines (pr-guidelines)
      Recommended practices for handling FreeBSD problem reports.
Writing
	FreeBSD Problem Reports (problem-reports)
      How to best formulate and submit a problem report to the FreeBSD
      Project.
Practical rc.d
	scripting in BSD (rc-scripting)
      A guide to writing new rc.d scripts and understanding those
      already written.
FreeBSD Release
	Engineering (releng)
      Describes the approach used by the FreeBSD release engineering
      team to make production quality releases of the FreeBSD
      Operating System.  It describes the tools available for those
      interested in producing customized FreeBSD releases for
      corporate rollouts or commercial productization.
Remote
	Installation of the FreeBSD Operating System without a
	Remote Console (remote-install)
      Describes the remote installation of the FreeBSD operating system
      when the console of the remote system is unavailable.
Serial and UART
	devices (serial-uart)
      Detailed information about the use of serial ports on FreeBSD,
      including several multi-port serial cards.
FreeBSD and
	Solid State Devices (solid-state)
      The use of solid state disk devices in FreeBSD.
The vinum Volume
	Manager (vinum)
      Using gvinum to create RAID arrays.
Design elements
	of the FreeBSD VM system (vm-design)
      An easy to follow description of the design of the FreeBSD
      virtual memory system.
Articles on other web sites
Various independent efforts have also produced a great deal of useful information about FreeBSD.
- 
	
Niels Jorgensen has authored an academic study on the dynamics of the FreeBSD development process: ``Putting it All in the Trunk, Incremental Software Development in the FreeBSD Open Source Project'' [Information Systems Journal (2001) 11, 321-336].
 - 
	
Kirk McKusick, one of the original architects of BSD at U.C. Berkeley, teaches two 4.4BSD Kernel Internals courses using FreeBSD. For those unable to attend the courses in person, a video tape series is also now available.
 - 
	
Appendix A from the college textbook Operating Systems Concepts by Silberschatz, Galvin and Gagne has been made available online in PDF format. The appendix is dedicated to FreeBSD and offers a good introduction to FreeBSD's internals.