Understand that the morning line is not very accurate. It is a last minute responsibility completed 48 hours prior to post time.
Purchase a program for the day and look at the public handicapper's selections. Notice that all handicappers lay about the same odds for each horse.
Study the program for each race and realize that any horse listed at 20 to 1 is 99 to 1 in reality.
Select other literature to read the morning line odds. Towns that have a racetrack usually publish a racing form in their daily paper.
Log on to the website of the racetrack. There will be a link to the morning line odds on the website.
Compose a list of horses for each race that you believe will win, place or show. Go to an Off-Track Betting establishment and compare your picks to the tote around the country.
Read the horse racing blog of the day. Blogs on horse racing sometimes include the inaccuracies of the morning line odds.