I'm having trouble with ALL of it, and need to review Course One. This is such a different way of thinking and, re-programming a mindset, after over 1/2 century, is hard work! For example, I wonder if I should review and "semi-master" course one, or jump right into course two?
We will all have our unique challenges with this, so we should probably just "go with what we get" at this time . . . .?