A good place to start is by skimming through the ever-growing list of frequently asked questions (with answers, of course). Then have a look at the rest of the online manual and other resources in the documentation section.
For day-to-day help and troubleshooting, the broader PHP community is very active in a few places:
Reddit: r/PHP — look for the Weekly help threads that are pinned to the top for beginner and general questions.
Stack Overflow: browse or ask questions using the php tag.
Connect with local and regional PHP User Groups and find upcoming meetups, conferences, and training sessions:
Historically, a number of mailing lists were devoted to talking about PHP and related projects. While many are no longer active, you can still find their descriptions and archives on this page.
There was a PHP language NNTP newsgroup at comp.lang.php, and many of our support mailing lists are also reflected onto our news server at news://news.php.net/. The server also has a read only web interface at https://news-web.php.net/.
Please note that these are legacy resources and primarily useful for historical reference.
If you have a problem or suggestion in connection with the PHP.net website, please contact the webmasters.
If you have problems setting up PHP or using some functionality, please ask your question on a support channel detailed above, the webmasters will not answer any such questions.