crossfit

You will definitely lose body fat on crossfit. You would have to eat a case of twinkies after every workout to not lose anything.

I am a bit confused about their workouts though.

On the Crossfit.com homepage there is a link to the lft called "exercises & demos".

If you click there you can see a video on any of the exercises. Also, on occasion right in the same blog post of the Workout of the Day there will be a video of how the entire workout works for that day.