How to learn to use a Mac
It made me
Content/Accomplished 
"Challenging, but necessary."
How I did it: I got a job that required knowing how to work a Mac. Day 1 I had no idea how to turn it on, but by the end I knew how to work it and it enjoyed it.
Lessons & tips: Definitely ask questions. That is the best way. I guess you could look online too.
Resources: Co-workers.
