to be honest Anthony, download and watch the Harry Page videos as a starter - you cant go wrong there. they might be slightly different to the current PI software - but the functionality and learning will be the same. I believe that harry will be refreshing his video collection but for now they are pure gold. After that fork out some dosh for the Warren Keller videos on DVD. You will be a master in no time. Also go through and have an extensive read in the PI forum. there are some major hints and tips there.
http://www.harrysastroshed.com/pixinsighthome.html
http://www.ip4ap.com/pixinsight.htm