What are the courses which improve me in teller position ?

For me the anti money laundering act and counterfeit detection program for dif currencies around the globe 

I THINK  the anti money laundering

The courses that improved me in teller position, i think its management.

Especially for me as I have been worked as a teller in a different enterprises since the last 9years , which is the biggest course , because during these intervals I have done different type of training like prevention in counterfeit , and some of the major world currency.

I think first step to improve your position bookkeeping the best course