Two private cards, five shared cards
Each player receives two hole cards. The board can eventually contain five community cards. Make the strongest five-card hand from the seven cards available to you; using both hole cards is not compulsory. A player can also win before showdown if every opponent folds.
Follow four betting rounds
Blinds are posted before the initial betting round. The flop then adds three shared cards, the turn adds one and the river adds the last. Each stage has its own betting round. A check is possible when no bet needs matching; a call matches a wager, a raise increases it and a fold abandons the hand.
When the board plays
Imagine the board is A♣ K♦ Q♠ J♥ 10♣. You hold 7♦ 6♦ and your opponent holds A♥ 2♠. Both can use the board’s ace-high straight. The extra ace does not improve the best five-card hand, so neither wins simply for holding it. Any split is still subject to the room’s applicable fees and pot rules.
All-in does not mean every chip is yours to win
A player can only compete for the portions of a pot that their eligible contribution covers. If larger stacks continue betting after a shorter stack is all-in, side pots may be needed. Let the room’s software and documented rules resolve the exact allocation rather than treating the largest displayed pot as one undivided prize.
The primary references are the PokerStars hold’em rules and WSOP rules guide. Check the Canadian poker directory for provincial and product scope, then read about tournament structures. Knowing a game’s rules does not establish that a particular room accepts you.