We've just published a new video that introduces the concepts behind Pivotal Tracker. It talks about the agile process that works best with Tracker, including story breakdown and estimation, prioritization, and workflow. If you're new to Tracker, or would like to make sure you're getting the most of out of the tool, this should be 8 minutes well spent!

Any chance of getting a higher res version?
Awesome video. Really helpful for our team. Love how you have a point of view about the approach, not just the feature function. Impressive!