The Harvard Center for Biological Imaging maintains a list of microscopy courses:

External Microscopy Courses

The Annual Advanced Imaging Methods Workshop

Hosted by UC Berkeley
Late January
For more information, please go to the course webpage:

Advanced Imaging Workshop

Also please check out the Brigham Health NeuroTechnology Studio page:

Dr. Lai Ding's "Introduction to Digital Image Analysis with ImageJ Webinar Series" is great introduction to using ImageJ for image manipulation and analysis

ImageJ Webinar Series