Commodore Peripherals: A User’s Guide by Julie Knott and Dave Prochnow is a 1984 COMPUTE! Books reference for VIC-20 and Commodore 64 owners who want clear, practical guidance on choosing, connecting, and using common Commodore add-ons. The book begins with an overview of the two computers, their ports, keyboard functions, joystick handling, video/audio connections, and error messages, then explains major peripherals including the 1530 Datassette, 1541 disk drive, VIC-1525/1526 printers, VIC-1520 printer/plotter, VIC-1011A RS-232C interface, VIC-1111 16K memory expander, VIC-1211A Super Expander, 1600 VICMODEM, 1650 AUTOMODEM, and CP/M cartridge for the Commodore 64. Written for beginners but detailed enough for experienced users, it combines setup instructions, command explanations, BASIC examples, troubleshooting notes, glossaries, and quick-reference sections so readers can safely expand their Commodore systems for storage, printing, communications, memory expansion, and alternate operating environments.