Most newbies I give the basic betting rules to (flat bets and exotic bets) are drawn in to the .10 super. I print out a results ticket and go through the WPS prices and the Exacta, Trifecta and Super. Since the OTB I work at is at a casino my guess is that most of them want to figure out a way to have fun without spending too much.
At the OTB you don't have the benefit of being on track and actually seeing the horses in the flesh which is a great experience. I always tell people to get out to the actual track for that experience.
One thing I know does not do anybody any good is to show 30 seconds of a red light flashing as the horses approach the starting gate. Looking at you Golden Gate. SHOW US THE HORSES!