Crossfit????

I am starting a new adventure into Crossfit training...I did the Intro Session at my local affiliate(well local to my office, not my home) Crossfit Done Right . It seemed soooo simple. 500 meter row, 40 squats, 30 situps, 20 push-ups and 10 pull-ups(ok THAT seemed hard). The pull-ups were modified as hanging from rings and pulling my body up at an angle. I finished in 11:08. Seriously...I was sore for three days! At first it was a good sore, then it rolled into a painful, stiff sore, then it became WTF sore!  So what do I do, I start building my own at home gym.....really?  I'm that crazy. Did my first WOD today at work gym....so here goes:

Puppies:
Three rounds for time of:
Row 250 meters
10-35 pound Front squat 15 Sit-ups
20 Box jumps, 15 inch box

It was done for time and I completed it in 14:48.

I will attempt the Crossfit Endurance workout for 9 minute all out run effort.