Casino Learning Centre: Rules, Odds and Practice

A free, text-first route through casino rules, probability and common mistakes. Read the examples without opening an account or staking money. This page adds blackjack, craps and slots fundamentals to our existing Baccarat and Roulette lessons.

Adults of legal gambling age only. Laws and entry ages vary by location. Education does not make gambling safe or profitable. You can lose your entire budget; choosing not to gamble is always an option.

Jump to: Learning route · Blackjack · Craps · Slots · Odds and RTP · Glossary · Practice · Before a game · Support

1. Choose a learning route

• Baccarat: start with scoring and fixed drawing rules, then use the Baccarat Learning Hub for worked hands and odds.
• Roulette: our Roulette guide explains zero pockets, bet coverage, payouts and why progressions do not remove the house edge.
• Blackjack: learn card totals and available decisions below. Unlike standard punto banco, a player makes decisions during a hand.
• Craps: separate the come-out roll from the point phase before looking at other bets.
• Slots: understand the exact total stake, paytable and random outcomes before any features or jackpots.

2. Blackjack: cards, decisions and settlement

In common blackjack, you compete with the dealer. Cards 2–10 keep their value, picture cards count 10, and an ace counts 1 or 11. Your aim is to finish higher than the dealer without exceeding 21. Going over 21 is a bust; busting first loses even if the dealer later busts. Equal ordinary totals normally push.

After the opening cards, hit takes another card; stand ends your draw. Double adds a stake and usually allows just one more card. Split separates an eligible pair into two hands with another stake. Where offered, surrender ends the hand for a partial loss. Availability and restrictions vary.

A natural blackjack is an initial ace plus a ten-value card; a three-card 21 is not a natural. Check whether blackjack pays 3:2 or 6:5, whether the dealer hits soft 17, and the split/double rules. Insurance is a separate wager, not protection against every loss. There is no universal house-edge figure for all blackjack tables, and correct decisions cannot guarantee winning.

Rules reference: MGM GameSense blackjack guide. Always use the specific table’s published rules.

Worked arithmetic: Ace + 6 is soft 17 because the ace can count 11. Add a 9 and the total is 16, counting the ace as 1. On a hypothetical 10-unit natural-blackjack stake, 3:2 produces 15 units profit, whereas 6:5 produces 12. The returned stake is separate: total returns are 25 and 22 units.

Dealer soft-17 example (S17 versus H17): Suppose the dealer has an ace and a 6, a soft 17 because the ace counts as 11. Under a stand on soft 17 (S17) rule, the dealer takes no more cards. Under a hit soft 17 (H17) rule, the dealer must draw. If the next card is a 9, the ace instead counts as 1, making 1 + 6 + 9 = 16, so the dealer must draw again. A hard 17, such as 10 + 7, stands under either standard rule. These are table-rule examples, not ways to predict cards; check the rule displayed for the actual game. Source: MGM GameSense blackjack guide.

3. Craps: follow one Pass Line decision

Standard craps uses two dice. On a come-out roll, a Pass Line wager wins on 7 or 11 and loses on 2, 3 or 12. A 4, 5, 6, 8, 9 or 10 establishes the point. After that, Pass Line wins if the point appears before 7 and loses if 7 appears first; other totals leave that wager unresolved. Standard Pass Line wins pay 1:1.

Do not confuse Pass Line with a one-roll proposition wager. Don’t Pass has different rules, including a come-out push on 12 in the common “bar 12” version. Optional odds bets and side bets have separate conditions; this introduction is not a guide to every bet. Read the layout and ask about unfamiliar rules before a round.

Rules reference: MGM GameSense craps guide. A previous streak does not change the next fair dice roll.

Worked sequence: a hypothetical come-out 6 establishes the point. A following 5 does not settle Pass Line. A following 6 wins it; a 7 instead would lose it. With two independent fair six-sided dice, 36 ordered results are equally likely. Six sum to 7, so its probability on any roll is 6/36 = 1/6. Five sum to 6, giving 5/36. These counts do not make a particular next roll predictable.

4. Slots: read the game, not the animation

In a typical random slot, the game evaluates the generated symbols against its paytable. Before a spin, check the currency or credit value, the total cost per spin, qualifying symbol combinations and feature rules. Payline, ways-to-win and cluster games do not all evaluate wins alike. A displayed denomination may be much smaller than the total stake.

Use the help panel to distinguish ordinary wins, scatter symbols, bonus rounds and jackpot eligibility. Do not assume a big advertised maximum is likely, or that a near miss means a win is close. For independent random spins, earlier losses do not make the machine “due”. A game with persistent features must be understood through its own rules, not a blanket assumption about every feature state.

Example: 20 selected lines at 0.05 units per line cost 1 unit per spin. A returned award of 0.40 units leaves a net loss of 0.60 on that spin, even if the screen celebrates it. Reference: MGM GameSense slots guide.

5. Probability, payout, house edge and RTP

Probability describes how often an outcome occurs in a model. Payout describes what that outcome pays. They are not the same. “35 to 1” means 35 units profit on a winning 1-unit wager, with that stake returned. “36 for 1” can describe the same 36-unit total return. Read the wording.

Worked roulette model: on a fair 37-pocket single-zero wheel with a standard 35:1 straight-up payout, one number wins with probability 1/37 and loses with probability 36/37. Expected net result for 1 unit is (35 × 1/37) − (1 × 36/37) = −1/37, about −0.027 units. The house edge is therefore about 2.70% per unit staked under these assumptions. This is a long-run average, not the amount a session must lose. See the Roulette guide for other rules.

RTP is the theoretical share of total stakes returned over a very large number of games under stated conditions. It is not your chance of winning, a refund promise, or a percentage of your deposit. Under the same accounting assumptions, 96% RTP corresponds to 4% house edge. Volatility describes how widely results can vary; two games with the same RTP can feel very different.

Hypothetical turnover example: 100 rounds at 1 unit each create 100 units of wagers, even if some returned money is reused. At 4% house edge, expected loss is 4 units. Actual loss may be much higher, and you may run out of money before 100 rounds. More play does not recover losses by making the average “catch up”. Background: Great Britain’s Gambling Commission explanation of RTP.

Go deeper with a worked example: For Baccarat-specific calculations, the RTP, house edge and turnover guide shows how repeated wagers—not just the initial deposit—affect theoretical expected loss. The mixed-wager worksheet then demonstrates how the expected cost changes when stakes are split between Banker, Player and Tie. Both are arithmetic illustrations, not forecasts or betting strategies.

6. A short cross-game glossary

• Stake: money exposed to a particular wager. Turnover: the sum of stakes across wagers, including reused returns.
• Net result: returned money minus money staked. It differs from a headline prize.
• Push: a wager settled with its stake returned and no profit. Void: a cancelled wager; the applicable rules govern settlement.
• Paytable: the game’s schedule of qualifying results and awards.
• Side bet: a separate wager with its own outcome and payout, not necessarily the same house edge as the main game.
• RNG: random number generator used in many electronic games. Testing does not guarantee profit or remove the house edge.

7. Check your understanding without betting

Try these on paper. No registration, deposit, simulation or wagering is needed.

• Question 1: What is Ace + 7 + 9 in blackjack?
• Question 2: A craps Pass Line point is 8. The next rolls are 3, 10, 7. Does Pass Line win, lose or remain unresolved?
• Question 3: A 2-unit spin returns 0.75 units. What is the net result?
• Question 4: Does a 96% RTP mean a player must receive 96 units from a 100-unit deposit?

Answers: 1: 17, with the ace counting as 1. 2: It loses when 7 appears before 8; 3 and 10 did not settle it. 3: A loss of 1.25 units. 4: No. RTP concerns long-run turnover under specified rules, not a guaranteed return on a deposit.

8. Before any game: rules, access and practical checks

• Identify the exact game and variant, not just a familiar name. Read stakes, payouts, special-result rules, interruption rules and settlement procedures.
• Check legal age and availability in your location. Verify an operator’s licence with the relevant regulator rather than relying only on a logo.
• If choosing to gamble, set an affordable loss limit and a time limit in advance. Essential expenses and borrowed money are not a gambling budget.
• At a table, ask about the dealer’s signals and when you may handle cards or chips. Do not add or move bets after betting closes.
• Keep a record of the game name, round identifier and disputed settlement if an error occurs. Use the operator’s complaint process and the relevant independent route, where available.

9. Limits, stopping and independent support

Deposit limits, loss limits and time limits measure different things. None makes gambling risk-free. Chasing losses, borrowing, hiding activity or continuing beyond planned limits are reasons to stop and seek support, not to find a new system. Betting progressions cannot remove a negative expected return and can increase the money exposed.

Self-exclusion and blocking tools can help restrict access. Coverage varies by operator and jurisdiction. GamCare’s recovery toolkit includes self-exclusion, blocking software, money guidance and links to support organisations in the UK and internationally. Our existing safer gambling guide offers further reading.

Scope and sources: Prepared 11 November 2026. Linked GameSense resources provide introductory rules, not universal rules for every venue. Regulatory guidance is jurisdiction-specific. Numerical examples here are hypothetical calculations with their assumptions stated, not observed player results or forecasts.