I’m teaching Sunday School in a couple of days, and this is the state of my mind and my kitchen table. I have learned the best preparation is to read the scripture assignment as many times as I can and look for treasures. The Come Follow Me manual is the best study guide.
A small amount of time goes into other research (that stack of books). I don’t listen to podcasts because my class members are already doing that.
I keep notes and ideas on post-it notes to add or toss from the lesson plan, and most weeks the discussion travels beyond this map. In the end, I can’t claim credit for the things people learn from the discussion, but this is my process.