Some of these contain Apple news (Macintosh and iOS [iPhone+]) and some contain user discussion forums; some have both. This list is incomplete, and some items may be at least slightly stale.
• <http://www.apple.com> Besides news and advertising, there are user help forums.
• <http://tidbits.com> Longtime news and "tips" site.
• <http://www.macworld.com> The "default" Macintosh magazine, for years.
• <http://www.cultofmac.com> Some useful news, some breathless hyperbole (on both sides of the _Apple_ issue).
• <https://www.engadget.com/topics/apple/> The successor to TUAW, The Unofficial Apple Web-Log.
• <https://www.macrumors.com> News and forums.
• <http://opensourcemac.org> Non-"brand" software.
• <http://mactracker.ca> Information on all models. Wikipedia has similar information in detail.
• <http://lowendmac.com> Older hardware.
• <https://www.cnet.com/forums/mac-os/> Forum.
• <https://en.wikipedia.org/wiki/Apple_community> List of forums.
• <http://lifehacker.com> Not Apple-centric as such, but they do have Macintosh and iPhone coverage of both news and tips.
• <http://www.howardforums.com/forumdisplay.php/115-Apple> Longtime forum for Apple mobile products. (Other mobile products are nearby, including cellular carriers.)
You may already know that the best way to locate specific information is to Internet-search for the wording of an error message, or for words related to the issue.
Mark_
24 March 2017