The new format is rather easy to understand (at least it is for me). On the FS1 Championship Series, there are 16 trucks (8 Feld-owned, 8 independents). They start off the show with qualifying. The top 8 times from qualifying make it into the racing bracket and the bottom 8 do an obstacle course competition. For the obstacle course, each truck goes out one at a time and runs on a specially designed obstacle course utilizing the obstacles on the track (including freestyle obstacles). The fastest in the obstacle course earns 1 point towards their series total. I forgot to mention that the fastest qualifier also earns 1 point towards their series total. In racing, the top 8 bracket race (round one, semi-finals, finals), and the winner of the bracket earns 2 points towards their series total. Then, all 16 trucks perform in freestyle (90 seconds regulations with 30 bonus) and can earn a regulation score between 4 and 40 (6 judges, high/low scores get dropped and middle scores get totaled up) and then have the chance to earn 5 extra bonus points. The winner of freestyle gets 2 points towards their series total.
Right now, Dustin Brown in Monster Mutt is leading the series with 3 points because he won obstacle course and freestyle. Charlie Pauken in Grave Digger is second with 2 points for winning racing, and Chuck Werner in El Toro Loco is third with 1 point for being the fastest qualifier.
Hope this clears it up a bit.