Hey Laura
It's all in the
FAQ HERE but I'll give you a general rundown
Challenges go up on the 1st, 10th, and 20th of each month. You have all month however to do them for points unless otherwise noted (ex: color ch is only for 1 week)
You earn 1 point for each challenge completed. If you use a new release from the Sat before you can earn a bonus point except on the photo LO, card ch, and color since it's just an extra point to begin with. The hybrid workshop is worth 3 points.
On the first or thereafter you will receive a PM with a coupon code valid for 1 specific week. It's a one time use code but no limit on what you buy with the exception of custom font, premiere font, chipboard (but sometimes there is a chipboard coupon too-like this month), blog in a box/blog services, and inspired by templates...
Here is the point breakdown needed for a coupon
* 10-19 Points = 20%
* 20-29 Points = 30%
* 30+ Points = 40%
that's the general idea for them...there's more info in that above link