A few months ago I tried a lesson from Atomic Learning called How Big is a Foot?
I thought I had it all figured out but when I tried it in the classroom it didn't work. After listening to Dave today, I realized I must not have chosen the correct year. So, lesson to be learned....make sure you have the correct year!
One thing I found beneficial was to have my laptop home when I listened to the tutorial on my home computer. That way I could listen on one, and type/set up on the other. This is especially helpful when you are unfamiliar with an application.