my car idles rough, and stalls. autozone check had 9 error codes. on 2001 Cadillac DeVille DTS

PO102,106,121,171,174,300,506,507. where do i start, with the MAP sensor or MAF sensor.

Asked by for the 2001 Cadillac DeVille DTS
To me the best course for you with all those code I would start with taking the car to a shop, you can spent alot of money guessing and installing parts and not fix the car, I have no real awnser for you, we would be glad to look at your car.