In addition to this documentation, there are a variety of other resources:
- the Ardour release notes
- the Ardour Forums
- information about Ardour Support via mailing lists and IRC (chat)
The IRC channels in particular are where most of the day-to-day development and debugging is done, and there are plenty of experienced users to help if problems are encountered when using Ardour.
Please be prepared to hang around for a few hours, the chat is usually busiest from 19:00 UTC to 04:00 UTC. It is best to keep one's IRC client window open if possible, so that a belated answer can be seen.