This MOOC for undergrad students by the University of Montpellier is about labeling and imaging vertebrate embryos.
All the videos are also available on their YouTube channel.
As far as I know, this is the first pure microscopy MOOC (Massive Open Online Course), dealing with sample preparation, imaging and data handling!
If you know of another microscopy MOOC (I know of some image analysis MOOC but not microscopy), please leave me a comment or sent me an email! 🙂