Well you know what your doing but when you want to teach some one action script you should really try and explain the code not just give it.
really if anyone were to follow this they would be completely lost.
You didn't tell how to make a MC or convert it to a button or what to do after they make it a button. it wasn't bad but it wasn't good ether all it needs is more detail and it would be very nice. keep it up though.