These are the art education associations that have art confrences throughout the year. NAEA is the best one for all art teachers and NCECA is the best one for ceramic art teachers. 

This also has the websites I use to purchase art supplies for my classes.

Canva is where I do most of my class work. I make the posters for art shows and other events. I make infographics for class projects. I use the slides to make lesson presentations. It is a place to create visually pleasing information and it is very helpful for a teacher -- especially an art teacher.