MacJournals from GCSF, Incorporated - Periodicals for serious Macintosh users and professionals, delivered electronically in a choice of formats without any advertising. Free trials available. - http://www.macjournals.com/
The Mac Maineiac - Articles and newspaper columns written by Pete Zimowski primarily about Macs, Mac software, and how to use them. - http://macmaineiac.com/
AppleMatters - An "irreverant yet serious look" at all things Apple. Includes small articles and reviews of hardware, software, and issues. - http://www.applematters.com
Macintosh Products Guide - A comprehensive catalog of products made for the Mac from Apple Computer. - http://guide.apple.com/