To effectively compare odds and lines across multiple sportsbooks, start by establishing a reliable method for gathering data, either through direct engagement with sportsbook websites or by using odds comparison tools and aggregators that compile information in real-time. Focus on key metrics, such as point spreads, moneylines, and over/under totals, ensuring you check multiple markets for a comprehensive view. Pay attention to any variations in odds, as even slight differences can impact potential payouts significantly. Additionally, consider taking note of each sportsbook's reputation, regulatory standing, and available promotions or bonuses, as these factors can influence your overall betting strategy. Consistently tracking these elements can help you identify the most favorable betting opportunities and maximize your potential returns.