Book can be helpful,

book can be helpful, but what works for an author may not work for
you. Invent a new eBay technique.
———
This top 10 list is not loaded with specific details that will make you an
eBay wizard immediately. Nonetheless, it points out some things for
you to consider in developing successful eBay practices.
Although this list does not provide the details you need for success on
eBay, this book does. Read it through once. When you have a question
later, use the book as a reference. Most authors, including me, write
books they would like to use as references. When I buy and sell on
eBay, I use this book as a reference for details that I have forgotten.