Concentration

I am coolingstar9, I am unable to visit other blogger site in the next three days. The reason is that I have to attend the short course--customer service excellence.
I have to concentrate on that, I wish I can learn as much as possible from the course. I have to revise it at night because I want to pass the test.
During the lesson, I will ask the lecturer whenever I have doubts.
Concentration is the key to absorb more.
Do you ever attending courses? What courses? Had you benefited from it?