The ultimate goal is to make the best five-card hand possible, while trying to guess out what your opponent has. After the first two cards are dealt, you peek at your hand and place a bet. Then the first three cards are turned over. We call it the Flop.
More bets are placed, and then we turn over a fourth card. [She discards another card, and flips over another one, placing it right next to the first three] We call it the Turn
More bets, and a fifth card is placed down--[The same process as previous is repeated. Toss one card, flip another over. Put it up next to the other four] One last round of bets, and the cards are flipped over. Winner takes the whole pot, unless you tie and it's split accordingly.