Just read this on FB - the Nikon School is offering their online classes for free for the month of April. I attended one in person over 20 years ago and felt it was a valuable learning experience.
https://www.theverge.com/2020/4/2/21204243/nikon-free-photography-classes-april
https://www.theverge.com/2020/4/2/21204243/nikon-free-photography-classes-april