To win big in NBA gambling, focus on thorough research and analysis. Study team statistics, player performance, injury reports, and historical matchups. Utilize betting strategies like the Martingale system for bankroll management, and consider betting on underdogs for higher payouts. Live betting can also provide opportunities to capitalize on in-game momentum shifts. Always shop for the best odds across multiple sportsbooks to maximize potential returns. Lastly, maintain discipline and avoid emotional betting to ensure long-term success.