The BIND 9 Administrator Reference Manuals
For documentation covering configuration syntax, detailed feature descriptions, command usage, and basic troubleshooting and security considerations, the best place to start is the BIND 9 Administrator Reference Manual, also known as the “ARM“. Every source archive of BIND 9 distributed by ISC contains copies of the Administrator Reference Manual in HTML and PDF formats. They can be obtained by downloading the source, from the links below (PDF only), or they can be read with a browser directly from the ISC FTP server.
Quick links to current Administrator Reference Manuals
BIND DNSSEC Guide – this is a bit out of date, but it is useful for the broad overview of how DNSSEC works.
BIND DNSSEC Quick Start Guide (printable 1-page handout) this is also a bit out of date.