Thread: TY russian books - what makes them good

so generally, most who have self taught (myself included) recommend the new penguin russian course as a staple. but what, in your opinions, made this particular book so good/popular?
what d'you think the things a TY book should absolute include for it to be useful to a reader?

Originally Posted by Lt. Columbo

what d'you think the things a TY book should absolute include for it to be useful to a reader?

audio (CDs) so you hear not just read.