Over all course is tough but the content is very impressive.

Recommended to all, to take this course.

Thanks Coursera.org for this wonderful opportunity.

This course is very good

Some PDF could have more information.

russian accent is very difficult to understand. and the teachers aren't confident enough.

the lecturer isnt fluent in english, seemed like he had difficulty communicating ideas. made lots of grammatical mistakes, which made his sentences sometimes confusing. worst of all, it was really obvious that he was just reading a script. despite, still had many errors.

honestly ... its the first time I feel bored with a course on Coursera, its very boring and theoretical, I prefer reading the content in a book rather than listening to hours of theories. Sorry for I couldn't complete it its time wasting really.

The accent is so heavy that I can't understand him and it's not even worth trying.