When the flop comes. The first thing to do is look at the board . Figure out what you have. Figure out what the Best possible hands possible are. Than count your outs.
Are there flush draws or straight draws out there etc.
What are the odds of catching a card that will give you the best hand.
If you have Q,J Suited Hearts
Flop comes 10 hearts,9 hearts, 3 clubs
Your out are any heart, K, 8, Q, J. (21 Outs)
You have a 68% chance of catching your card with 2 cards to come
and a 48% chance with 1 card to come.