Go4Expert - [help]which pro is more popular in USA&Canada? Which should I learn?

[help]which pro is more popular in USA&Canada? Which should I learn?
hi,
I'm a rookie of program. My major is not computer. I ever work in some software company, and I found I must learn some language asap.
I fell puzzled, C++ Java .net, they're important.
But as a beginner which should I learn, I found there're some lessons and tranning all about Java and .net, but there is no C/C++ lesson.

I wish I could do C++ later. some programmer told me that I can learn Java at first, and then, after tranning, when I find another job, I may learn some C++ after that. Hope I could become a experiened guy.
Besides I wanna work in the USA and Canada in the future.

so my question is
1, Which tranning cause should I learn now. (Java .net C++)
2, Which program language is more popular in America、Canada.

thanks a lot~

PS I've asked a education tranning company, their java course about 5 months, .net tranning about 3.5 months