Developing a successful handicapping system in horse racing betting involves a combination of factors such as studying past performances, understanding track biases, and analyzing trainer and jockey statistics. Reliable sources for gathering information include reputable racing publications, official track programs, and online databases offering detailed horse, trainer, and jockey stats. Equipment changes like blinkers or tongue ties can significantly impact a horse's performance, with blinkers often sharpening focus and tongue ties aiding breathing. Bettors should monitor equipment changes and consider their potential effects when analyzing race contenders.