Loan For Used Car

Where can I find the best deals on a loan for a used car?
I plan to buy a used car. I have great credit but I do not know where you For the best interest or what a "good" rate would be in those days. This will be my first big loan, so I would like to make it best decision for a lender.
In a bank, even though interest rates are high in a used car. Whatever you do, avoid used car lots that finance their own autos.