Instructions in-game. P.S. If you get duplicates (which, if you don't, you're super lucky) they don't count as one. For instance, if I get "Disconnect" 3 times, I need to see 3 different disconnects, not just one, to mark them all off.
Try it sometime. I suggest: Normal Bingo: Try to fill up a row, column, or diagonal. Blackout: Try to fill the whole board! Comment how many squares you can fill in an hour!