Duffy Sheridan's painting course

I am half way through this course and finding it very useful in my quest to learn how to paint portraits. Duffy Sheridan teaches at a slow informal pace that can sometimes be tedious but I personally like his laid back style, one gets to know him after a while, this is nice because he seems to be a decent  relaxed - American type of dude. He is also extremely talented which is an important ingredient to me enjoying his portrait painting course.