I would not suggest taking apple cider vinegar undiluted, it can be quite acidic and I have a friend who read to take 2 TB and she threw up!
I take a large glass of ice water and add aprox 1 TB of ACV and drink that like I would drink ice-t ... I will do this 2-3x a day ... you can do a search 'health benefits of apple cider vinegar' and find that it is quite good for us and so many ways.
Putting ACV on your salads with olive oil is good too, I make my salads with just a bit of oil, add about 1 TB of blue cheese dressing and splash ACV over it ...