Um. I don't see how it's possible to "count cards."
Counting cards in black jack is to see what cards are out of the deck so that you can change your initial bet accordingly. But in Hold Em the deck is shuffled every time and you only see your own hole cards and the community cards... it's impossible to gain any edge becuase of this.
Tips for playing? The forum is full of them. No way to condense them all into one post.
-'rilla