Sorry but I'm not entirely sure what you are try to ask in your questions. I understand that English may not be primary language so I recommend using Link hidden: Login to view
to help you.
Please understand that it is essential that we understand y our post so we can help you out correctly and address your concerns in a timely manner as well.
You need to find suitable wholesalers or suppliers to help you get started with your online business. Any particular product you have in mind? I would be happy to help you locate suppliers :)
When you list on eBay it is best that you make NO mention of your supplier. Use your address or add that for returns if any the customer should contact you.
Some supplier sites will require that you register an account to start view their wholesale prices, but there are others that don't.
Hope this helps! All the best :)