For Vixen 3, take a look at the documentation and training videos. There’s a lot of information there that could save you a lot of time and hair-pulling. If you can’t find the answer you’re looking for there, or just prefer human contact, take a look at the support forums. There’s a great bunch of people ready and willing to help with whatever questions you may have.
If you’re looking for Vixen 2 support, check out the Wiki and then visit the support forums.