The fourth volume in a new series exploring the basics of Raspberry Pi Operating System administration, this installment builds on the insights provided in Volumes 1, 2, and 3 to provide a compendium of easy-to-use and essential Raspberry Pi OS administration for the novice user, with specific focus on ancillary topics that can be used with the Raspberry Pi OS based upon upstream Debian Bookworm release, and the Raspberry Pi 5.