Like in most open source projects, "free" Trac support is available primarily through the community itself, mainly through the mailing list and the project wiki. The latter is the authoritative source for the TracGuide (administrator and user guides for Trac).
There is also an IRC channel, where people might be able to help out. Much of the 'live' development discussions also happen there.
Before you start a new support query, make sure you've done the appropriate searching:
- in the project's FAQ
- in past messages to the Trac Users Mailing List
- in the Trac ticket system, using either a full search or a ticket query.
Please don't create a ticket in trac.egdewall.org for asking a support question about Trac. Only use it when you face a real and new bug in Trac, and do so only after having read the NewTicketGuidelines. The more a bug report or enhancement request complies with those guidelines, the higher the chances are that it will be fixed or implemented promptly!