Online Resources for Learning and Image Analysis

Bioimage Analysis with Fiji video series by Robert Haase from MPI-CBG. These are amazingly good!
Fiji and QuPath YouTube playlists created by Johanna Dela Cruz from the Imaging Facility at the Cornell Institute of BioTechnology. Many short, very easy-to-follow videos on specific processing and analysis functions found within Fiji and QuPath.
Introduction to Bioimage Analysis E-book by Peter Bankhead: a free, interactive textbook covering general image analysis concepts AND a guide to practical analysis using Fiji/ImageJ and Python.
Imaris video tutorials
I2K Conference video tutorials: From the Halfway to I2K consortium, a collection of introductory videos for the newest free & open-source image analysis software, including QuPath, Piximi, Fiji/ImageJ, Napari, and more!
Broad Institute Center for Open Bioimage Analysis Cell Profiler video tutorials
All NEUBIAS Academy @Home recordings are posted on their YouTube channel: definitely check them out, as they are wonderful!