Part one ends at the 25 minute mark, so if you just want to know what the law of the New Covenant is, and you're pressed for time, then I recommend that you begin at that mark. However, if you don't see how the New Covenant requires the establishment of a new law that did not exist in the Old Covenant, then be sure to watch from the beginning.
I identify the law of the New Covenant in four sections,
1. The commands of Christ
2. The example of Christ
3. The Apostolic instructions written in the NT
4. The Record given to us in the OT
I also, spend some time contrasting the law of the OT vs the law of the NT.
I'm certain that I could have done a much better job on this. I worked on this message for a long time, struggled to preach it, and have never been perfectly happy with it. However, I pray that the Lord may use my weakness for his own glory, and I pray that you will be spurred on to learn more for the purposes of becoming more like Christ.