If you're new to selling on eBay, one of the first things to learn is how to write a detailed, buyer-friendly listing. Here are a few tips:
Photos, photos, and more photos. Photograph whatever's good about your item and also any flaws (very important). You will want multiple photos for almost everything. Think about what the buyer would like to see. For instance, with books, I photograph the book cover, the front endpaper, at least one photo or illustration from the book, and the back cover. I frequently also photograph the spine.
AVOID STOCK PHOTOS
They do not show the buyer what he or she is actually purchasing. Most eBay buyers feel the same way. I very highly recommend avoiding stock photos in all instances.
IT'S ALL IN THE DETAILS
Describe what you are listing in detail. I try to write a description as if the buyer cannot see a photo of the item; I want to be detailed and descriptive. Be sure to discuss the condition in detail. List any flaws, however small. (I also recommend photographing any flaws.) Do not depend just on item specifics; actually write a solid description.
Please keep them brief and buyer friendly. Keep terms positive and avoid negative phrases. Have a buyer friendly return policy. Remember that with Paypal buyer protection, the buyer can file if item is significantly not as described, and the seller will have to refund. I feel very strongly that it is important to present yourself as a seller in a friendly, accessible way in the seller's terms.
I hope these listing tips are helpful, and I wish you wonderful sales!