- Notes on FreeBSD, NetBSD, and OpenBSD. A series of short books on topics related to BSD systems' administration.
- Building Firewalls with OpenBSD and PF, 3rd ed.: the 3rd edition of our classic book on the Packet Filter firewall.
- The OpenBSD Command-Line Companion, 1st ed.: The OpenBSD book every new user ought to have.
vi(1) Tips: Essential vi/vim Editor Skills, 1st ed.: No Unix-class system administrator or user will get far without learning the basics of vi(1), the widespread visual text-mode editor. Learning it has just gotten easier with "vi(1) Tips," the first book on vi(1) that doesn't scare the reader with unfamiliar terminology. We designed this book to get you up to speed with vi(1) in the least possible amount of time. And yes, the skills you learn in this book can be applied to all vi(1) implementations, including vim.
