Check with one main finance for a cheap car loan that you're likely to get easily approved for.
If you can't go that way check around see if you can find a used car dealership that helps with bad credit on people getting a used car.
Usually you can get financed for a used car for $500.00 down and cheap monthly payments and if you have bad credit they will help rebuild your credit as long as you make on time payments and never default on the car payments.