Hi topper97,
The same content, patterns and Tactics that apply to 'Value' DS questions also apply to YES/NO DS questions (you're just required to keep track of a different type of answer - "yeses" and "nos" instead of numerical values). YES/NO questions tend to require a bit more organization on your part though - which is why many Test Takers get them wrong. This is meant to say that how you've learned to deal with the Quant section overall is relevant to how you could improve on YES/NO DS questions. Before I can offer you the specific advice that you’re looking for, it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) How long have you studied?
2) What study materials have you used so far?
3) How have you scored on EACH of your CATs (including the Quant and Verbal Scaled Scores for EACH)?
Goals:
4) What is your goal score?
5) When are you planning to take the GMAT?
6) When are you planning to apply to Business School?
7) What Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich