Flexibility training

Hi, there
In this video you can check "dynamic stretching exercises"

You may also check "the stretching photocophy" in order to remember the "static stretching exercises"

 
Can you explain two basic differences between both methods. Check the questions  below.

Before or after the workout session?
Do you have to count repetitions or do you have to count seconds?
Do you reach a position and keep it for 30 seconds or do you move your joints?
Do you move your body parts trying to reach the limit of your joints?
Do you stretch muscles or do you move joints?
Are you still or are you moving?