Five card draw is one of the most common types of poker hands.
Each player is dealt five cards, then a round of betting follows.
Then each player may discard up to 4 cards and get back (from the deck) as many cards as he/she discarded.
Then there is another round of betting, and then hands are revealed (the showdown) and the highest hand wins the pot. Everyone puts a nickel into the pot (Ante) and you deal out 5 cards to each player.