Generally open source has very good support, with fantastic documentation, and nearly every possible issue described either in the documentation or bug trackers. If you find something new, reporting it to the bug tracker will quickly get you help from someone very knowledgeable on the software. But you have to remember these people are unpaid volunteers, and if you waste their time, they will not help you. Read the documentation and search the bug tracker before bothering someone. The devs have no obligation to put up with your bullshit.