Learn sports betting, properly

26 free lessons on how betting markets actually work, a 121-term glossary, and six calculators. No account needed.

Foundations

Read any price on any board and say what it actually means.

• 1. How betting odds work
• 2. Turning a price into a probability
• 3. The vig: what the sportsbook actually charges you
• 4. No-vig odds: finding the fair line
• 5. Moneyline, spread and total
• 6. Reading a full betting line

How the market works

Understand where a line comes from, why it moves, and which book to believe.

• 7. Where a betting line comes from
• 8. Why lines move: steam and sharp money
• 9. Why the closing line is the truest price
• 10. Sharp books vs. recreational books
• 11. Alternate lines and buying points

Finding an edge

Tell a good price from a bad one, and know which of the two you just took.

• 12. Expected value, from scratch
• 13. Closing line value: your real scoreboard
• 14. What a +EV scanner is actually doing
• 15. Arbitrage, and its four failure modes
• 16. Middles and low-hold bets
• 17. Turning promos and boosts into EV

Managing the money

Size bets so that a bad month is survivable and a good one is not luck.

• 18. Bankroll and unit sizing
• 19. The Kelly criterion, and why to halve it
• 20. Variance: what a losing month proves
• 21. Keeping records ROI can't fake

Beyond the main markets

Handle props, parlays, pick'em, live prices and futures without being handled.

• 22. Player props, and why they're softer
• 23. Parlays: the math, and correlation
• 24. DFS pick'em payout tables
• 25. Live betting basics
• 26. Futures, and the worst hold on the board

Sports betting glossary · Betting calculators