My favorite job was when I was a bank teller helping people get there money
I understand. I enjoyed making people money as a stockbroker.
I bet that is hard, I learned everything with on the job training. 
Yes. I was trained on the job too. It is not easy.
I can imagine, the main thing I need to learn is to count and how to be friendly and interact with cutomers. 
The market can be very humbling. But what customers want is to know you care.
That is a good thing, customer service in important. epecially when when we are just in a teller line.