Simply be truthful and honest in your description, and explain the book in plain English. Also, keep in mind that your goal in describing the book is to sell it, so employ smart sales strategies such as emphasizing topics that will appeal to your buying demographic. Finally, be sure to follow up after you've submitted your listing. Book descriptions on Amazon have a huge impact on how people find books. If you write a good description, it provides information for other readers about what makes this book unique while still being attractive enough to catch someone's eye. You can use this opportunity to talk about the main ideas or themes in the book without going into great detail. You should try not to focus too much on selling yourself or your book through the description. This is an opportunity to let others know what they'll get from reading the book and why it's worth their time. Your book description will help users decide whether to buy the book. If they like what they see, they may click through to the seller's page to read more details about the book. If they don't like what they see, they may move on to another book listing. Either way, you've done your job well if you've drawn them in with your description.