How can add vendor role to the customer?

Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Donec odio.
Quisque volutpat mattis eros. Nullam malesuada erat ut turpis. Suspendisse
urna nibh, viverra non, semper suscipit, posuere a, pede. Donec nec justo eget
felis facilisis fermentum.

What benefits a customer can take?
How to change customer’s address?
What is difference between simple & variable product?

Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Donec odio.
Quisque volutpat mattis eros. Nullam malesuada erat ut turpis. Suspendisse
urna nibh, viverra non, semper suscipit, posuere a, pede. Donec nec justo eget
felis facilisis fermentum.

How to buy several products at once?
How to add downloadable product?
How can a guest order the product?

Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Donec odio.
Quisque volutpat mattis eros. Nullam malesuada erat ut turpis. Suspendisse
urna nibh, viverra non, semper suscipit, posuere a, pede. Donec nec justo eget
felis facilisis fermentum.

What kind of payment methods are available?
What is benefit of paypal payment?
How to register as a customer?
What is the preferable way to buy product?
How can I return an purchased item online?

Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Donec odio.
Quisque volutpat mattis eros. Nullam malesuada erat ut turpis. Suspendisse
urna nibh, viverra non, semper suscipit, posuere a, pede. Donec nec justo eget
felis facilisis fermentum.

How to add coupon code?
How can I find theme style?
What are the delivery types you can use?