I have completed this course. This is the first MOOC class I have took. But from what I heard from my peers, they said that this is the best course that they have taken. I agree with them. Prof Bates explain things clearly and simplify some subject that may be difficult for those who don't have more in depth background in chemistry.
No pre-requisites is required, except knowledge of high school science. Prof Bates's occasional humor really helps liven up the dull, and sometimes dry material. So for anyone interested in forensic science, CSI fans? Wants to know more about forensics works? It is highly recommended.