how are those points determined
Here's how it works. You pick the winner in each game, straight up. Then you add your "confidence points" Anywhere from 16 to 1. For example, if two strong teams are playing or two weak teams are, and the outcome might be tough to predict, you might want to give that game a low number of confidence points. If a strong team is playing a weak team and it looks like a lock, you would want to give that game a high number of confidence points.
For each game you pick correctly, you are awarded those confidence points. At the end of the season, you drop your two lowest scores.