My new neighbors speak either bosnian or russian I can't tell,but their daughters speak fluent english and their native language.Which is which.Are they similar language's.I think it's pretty cool that children from other countries can speak english and their native language.

Learning to speak Russian…how difficult?

I speak/write Fluent English.

How difficult, and how long would it take a normal person to have some reasonably good working knowledge of Russian?

Thanks.