Other than the dealer where do you go online to get it

 

Amazon. EBay.
What is your paint code? If you do not know, you can check the data plate on the inside driver side door jamb. It will be a 3-letter code.

 

Search Amazon for your paint code.

 

Depends what you're looking to touch up. You can check out Dr. Colorchip, it's kinda pricey but its a quality kit for touch up work. You can usually find a discount code online or if you subscribe to their email list. I've used it before and it was a solid fix from 5-10 feet away.