You and your opponent are each dealt 10 cards. You only see 3 out of the 5 board cards ("The Flop").
2.
Set your cards into 5 poker hands based on the 3 Flop cards you see on the board and predicting which final two cards will be dealt ("The Turn" and "The River")
3.
The Turn and River are dealt and your five hands are compared against your opponents. If your first hand is better than your opponents you get 5 points. Then next hand is worth 4 points and so on with a total of 15 points per hand available.