Recently, I discovered Full Circle Magazine, a free linux magazine everyone can contribute to. They focus on Ubuntu, the most popular distribution out there, and my personal favorite. In the #1 issue, they have included lots of sweetness, including a comprehensive installation guide, and a complete MythTV tutorial, something I have been looking for for over a year now.
Their site seems to be under a lot of stress at times, so I've mirrored all their files here. Get them while they're hot.