Question: I am running an online business and would like to use paypal. How do I use paypal?
Answer: If you have a shopping cart feature all you need to use paypal, is the paypal email address you used for your paypal account. You would enter that in the shopping cart settings when you set it up. However if you want to know how to use the paypal site and feature you should check out their knowledge base.
The following link will take you to a video demo that you will find on paypal. It will show you how to manage your business using paypal.