>>> Sorry, I don't know what you mean. Tell me url, please.
>>
>>http://www.eps-software.com/DoubleImpact/
>
> Ok, I looked at this page. There are no events in Boston. And actually I am looking for courses (like 1 month 1 days a week or so), not for event. Because my manager told me that I can choose some courses and attend them, but I need to find those courses by myself. And I don't know where to find.

There are a few training companies like:
- www.appdev.com
- www.takenote.com

You could also consider going to Devcon www.advisor.com/devcon (June 6-10)

all three options are approx $1200US.