I signed up for Immunology (I'm a transplant recipient and need to know more), but there's only a 7-day free trial. So maybe all the other courses are like this. I know I can watch the ones on Youtube. Just wish you had mentioned this. OH, the immunology course is $49/month after the 7-day trial. Can't afford, but also can't picture myself swooshing through 4 parts of this complex topic.

Thanks anyway for all the other courses!