Beginner level questions for me to learn and start soon

Hello Friends,

I am trying to understand how Amazon selling works and plan to start soon. I have a lot of questions and request fellow experience redditors to help me answer that.

Disclaimer. I am already using the group wiki, blogs, etc which is very helpful and these questions are not answered there.

1. Do I need a business email to sign up? (I read somewhere that it is required)

2. When you say create your own brand. What does that mean? Does it mean that you register a website and logo, trademark, etc?

3. When you have your own brand, let us name it ZZZ. Are you printing the name on your products?

4. When you are selling via FBA and let us assume your inventory is loaded with 30 x items. From your inventory 20 were sold. The remaining are lying around for 6+ months now. Will Amazon charge you for storing this for each month?

5. What are some of the reasons your account can be suspended?

6. If you are on FBA and a product is returned or replaced. How do you recover the cost? Does Amazon pay you something etc or do they return you the actual product?

7. When a product is returned do you get charged extra for the return shipping charges etc?

8. How do you change your product price or give a coupon code? Do you have a UI to manage?

9. What if you don’t want to recall a product currently held at FBA. Can I recall them?

10. What are some of the other charges Amazon will charge you if using FBA?

11. Do you have to do any special packing for each individual product item before you ship them to FBA?