yum(8) — The manual page for the yum command-line utility provides a complete list of supported options and commands.

yumdb(8) — The manual page for the yumdb command-line utility documents how to use this tool to query and, if necessary, alter the yum database.

yum.conf(5) — The manual page named yum.conf documents available yum configuration options.

yum-utils(1) — The manual page named yum-utils lists and briefly describes additional utilities for managing yum configuration, manipulating repositories, and working with yum database.

Yum Guides — The Yum Guides page on the project home page provides links to further documentation.

Red Hat Access Labs — The Red Hat Access Labs includes a “Yum Repository Configuration Helper”.

Chapter 4, Gaining Privileges documents how to gain administrative privileges by using the su and sudo commands.

Appendix B, RPM describes the RPM Package Manager (RPM), the packaging system used by Red Hat Enterprise Linux.