How & Where To Learn About PCI Compliance

When business owners or IT directors first become aware they need to comply with the Payment Card Industry Data Security Standard (PCI DSS) and haven't gone through the process before, a period of learning, head scratching and sorting through the various PCI DSS requirements begins. A similar trend applies for software vendors when they begin to understand the PA-DSS. So when it comes to PCI compliance newbies, what's the easiest way to get educated?