There are several ways you can get support:
The documentation for version 3 can be found it at http://resources.phplist.com/documentation/You can also refer to the old documentation as a lot of the information remains valid. Contributions to documentation are always welcome. You can find instructions about how to help in the Documentation pages.
If you haven't already found your answer, then you probably haven't tried searching the forums. This is a great community resource. Use keywords that are unique to your problem for best results.
Please do not post in the forums unless you have;
You can request professional support in the Work & Commercial Projects forum.
Note that your request is open for the public to view and reply to. phpList Ltd can not be held responsible for the actions requested or taken by third parties.
phpList Ltd offers support for phpLis for a fee. Please send a support request to inquire about paid services.