If you have some college biology under your belt, Rice University in Houston has recently moved their on-line immunology courses from the EdX.org platform to the Coursera.org platform.
These are not focused on any specific disease, though diseases, including cancer, are mentioned, as are the use of antibodies in drugs and medical tests.
You can audit at no cost. You can also pay US $49 for each course to get the certificate. Some downloads may only be available to paying students.
The courses are all available starting today, January 2, 2019.
They estimate 5-8 hours per week to watch the videos, do the readings, and take quizzes and tests. I would double that.
There are 3 courses in the series, aimed at undergraduate medical school juniors and seniors. I think it amounts to over half of what the actual college students get.
The first is:
Innate Immunity and B-Cells
The other 2 are:
Auto-immunity and Allergies
Since this is the 1st time the courses are being offered on Coursera, I imagine the discussion forums will be well monitored by Dr. Novotny and her teaching assistants. I found the discussions on EdX allowed us to get additional explanations and clarifications.
I had no college biology when I first attempted these several years ago. I ended up doing an Intro to Biology on EdX.org from MIT - the hardest course I've ever taken. But back then, one had to keep up with the course schedule. I believe it's more flexible now on Coursera. So there's time to look up terms and watch additional videos if you are rusty. I don't think they have time to explain basic biology in the discussion forums. I wrote part of the EdX wiki to provide a list of additional YouTube videos to help out.
I did find that these courses significantly helped my understanding of CLL and it's various treatments, but the old course schedule was stressful along with my work schedule and family. I will be taking them again as a refresher, and to see what new lectures and handouts Dr. Novotny has come up with due to recent research.