Get bingo cards and a way to mark called numbers
Choose a caller to announce numbers
Decide the winning pattern before starting
Give each player one or more bingo cards
Shuffle the number balls, cards, or random number source
Call numbers one at a time
Mark each called number if it appears on your card
Watch for the winning pattern as numbers are called
Shout bingo when you complete the pattern
Have the caller verify your card
If correct, declare the winner and start a new round