If you go to eBay you will find quality books on marketing, online and off-line. If you want something specifically on eBay selling, you will find the best source is eBay its self.
You will notice that I did not give you a specific title. This is because your options are so great, on eBay, that you will surely see what you require. Also, check out Amazon, by the way. Amazon has even more choices for one looking for marketing reading materials.