For those interested in layout and design, the online tool Canva is not only a great tool for creating posters, post cards, etc... it also has a terrific series of design "classes" covering all kinds of topics. A recent one that prompted me to share this with y'all is one on layout.
https://designschool.canva.com/blog/visual-design-composition/Other topics are found on their free Design School site.
https://designschool.canva.com/It's mainly geared to the graphic designer, but some of it can be used by calligraphy designers as well.
Plus, I've used Canva to make some really nice-looking material for my wife's ballet performances, and Canva really makes it so much easier.
I have no connection with the company other than happy with their advice and product, and thought that some of you here would appreciate the free tutorials and blog entries.
Andrew