Buy few cheap items to raise your feedback to 10 star before you start selling on ebay. When you buy item, that confirms to ebay that your information like address is correct. otherwise you may have to fax documents and stuff and wait for few days before they get back to you.
If you want to be successful on eBay 1st thing you should do is research on products which are in demand and try to sale these products at the start by using different technique like free shipping, discount, holiday offers, auction listing etc.. You should also try using feedback system. Positive feedback can increase not only your sale but also your profits. Also try using affiliate program to promote items by using banners, text links, and other innovative tools, such as the editor's kit. You can earn commissions from affiliate program by sending traffic to your own listings as well as to other seller's listings on every purchase and also on each click that is directed to an eBay site.