Ask from An Tran, Vietnamese living in the U.S

Hi, Iam Vietnamese passport, I am studying in United States right now and want to have a trip to Macao. I have a few questions that need your help.

1. Where should I submit my application?
2. How can I pay the visa fees? The visa fee will also include additional fee or do I only need to pay $30?

Thank you very much for your help.