Creating a buzz for your novel should start immediately once you've uploaded it. In order to have successful sales, others have to know about your book and where they can find it.
When you're using Kindle for your novel, you are the promotion manager and the one person who will control whether your book is read or not. People can't buy your book if they don't know about it. You want to take advantage of all of the tools you can to help your book become a success.
Take Advantage of the KDP Select Free Days
One of those tools is Amazon's KDP (or Kindle Direct Publishing) Select. This program helps you, as a new author, get your book in front of the people who didn't know about it. But it can also help established authors get a book in front of new fans.