Its a good thing the original poster is not going from DME to Paveletskaya Vokzal. The construction (which is never ending) and the multiple exits....the confusion and getting lost is part of the Russian experience. I wouldn't worry too much.

Belaruskaya is much smaller and less chaotic..hmm... I hope you are not arriving / departing during rush hour. That place gets mobbed.

Sitting in my office in New York, I drew this map (from memory)