An excellent tutorial for a complete introductory EJS session, by Larry Engelhardt.
http://swampfox.fmarion.edu/sites/swampfox.fmarion.edu.engelhardt/files/pdfs/EJS_Tutorial/EJS_Tutorial.html

I watched the whole thing, indeed excellent tutorial as mention here  ;D  http://www.um.es/fem/EjsWiki/Main/Webcasts