From SELinux Wiki
FAQs and Documentation
SELinux Tools (canonical list with explanations)
Portuguese Documentation Hardening Linux Usando Controle de Acesso Mandatório
SELinux Booleans Documentation at the Centos Wiki
Writing policy for confined SELinux users Red Hat Magazine article by Dan Walsh.
Fedora 9 and summit preview: Confining the user with SELinux Red Hat Magazine article by Dan Walsh.
What's new in SELinux for Red Hat Enterprise Linux 5 Red Hat Magazine article by Dan Walsh.
A step by step guide to building a new SELinux policy module Red Hat Magazine article by Dan Walsh.
What is Security-Enhanced Linux? Red Hat Magazine article by Russell Coker.
Secure Linux containers cookbook by Serge Hallyn of IBM.
SELinux from scratch: Build an SELinux-ready Gentoo system by Serge Hallyn from IBM.
Polyinstantiation of directories in an SELinux system by Russell Coker.
Taking advantage of SELinux in Red Hat Enterprise Linux Red Hat Magazine article by Faye Coker and Russell Coker.
Hacks From Pax: SELinux And Access Decisions by Pax Dickinson.
Hacks From Pax: Security Enhanced Linux and Mandatory Access Control by Pax Dickinson.
Hacks From Pax: SELinux Policy Development by Pax Dickinson.
Paranoid Penguin - Introduction to SELinux, Part II by Mick Bauer.
Paranoid Penguin - Introduction to SELinux by Mick Bauer.
Multi-Category Security in SELinux in Fedora Core 5 by Russell Coker.