Built from the ideas in your betting books: value over winners, know your break-even, beat the closing line, size bets small.
Price & value calculator
Your win chance has to come from somewhere real (a model, or the fair price from several books). If you can't say why you know more than the market, assume you don't.
Remove the vig (two sides)
Bet log & closing line value
Logs stay in this browser only. Closing line value (CLV) is the best early sign you're good: if your price keeps beating the closing price, you're finding value even before the results show it. Expect 1,000+ bets before your win rate means much.