Just a quick note. A good friend forwarded me a course listing with the note, “This is not the traditional MTBF course, despite the title.” or something like that.
So, looked into the course offered by The MIRCE Akademy, titled Mean Time Between Failures — MTBF: Scientific method for the accurate predictions of Mean Time Between Failures.
So, this may be a good one to take. You can find more information at the course page.
If you have or plan on taking the course, please leave a comment here to let others know how it went and what you learned.