Whats the quickest way to learn auto sales?

[boxbeatle]

Like it or not, I accepted a job for a local car dealership. They have a new manager, and he wants me to eventually do all sales. Right now he does them all. They average about 10-12 cars per month. I am used to selling jewelry, where I know I can discount up to a certain percentage, like 30% tops. This place sells Chevy, Dodge, Chrysler, and Jeep mostly, and is going to increase used car sales. I can sell, but I know NOTHING about selling cars, the dickering, how much to give on a trade in, how much to decrease price, NOTHING. I am told I will get customer to sign an agreement that basically says "we agree to purchase if we can agree terms". I think the manager then takes over. Is this normal? What advice can anyone give me?