When your books might have started selling on Amazon, the best way to increase your kindle and paperback book sales is to run ads on amazon. You can advertise your KDP eBooks on Amazon.com (US) through Amazon Marketing Services (AMS). You can also advertise your book on big social medias like facebook, twitter, GoodReads, etc. You can also check out the performance of your books and even download the daily, weekly, monthly and even all-time report of your kindle books and paperback books. Always study your book's sales report from time to time as this will help you know the book that will yield more returns when you run your ads. AMS allows you to set the budget you want to spend and the maximum amount you are willing to pay when a customer clicks your ad. When customers click your ad, they will redirected to your book's detail page on Amazon store, which might eventually lead to sale boost. The good thing about this ad is it is Pay Per Click (CPC), that means that charges only accrue when a customer clicks your ad.

How To Advertise Your KDB Books Using Amazon Marketing Services (AMS) Account

You must have setup your Amazon Marketing Services Account before you can be able to setup and run ads on amazon.com for your kindle books. Click https://ams.amazon.com/ads to Set Up yours now!

I also wrote a tutorial article on HOW TO OPTIMIZE YOUR BOOKS RANK FOR AMAZON & GOOGLE SEARCH ENGINES

Your books must meet the following criteria before you can schedule and run ads for them:

It must be an eBook and must be written in English language.
It must available on the Amazon.com Kindle Store.
It must meet the Amazon Creative Acceptance Policies and the Amazon Ad Policy for Books.

Here AMS offers two ad types for KDP eBooks:

a. Sponsored product ads: This type of ads drive sales with keyword-targeted ads that appear below search results and on detail pages.

b. Product display ads: This type of ads drive awareness of your book with reader and genre-targeted ads on detail pages.

Setting up or scheduling an ad for your kindle book in Amazon Marketing Services Account (AMS) is very easy. You can set it up using this five steps explained with screenshots below.

SEE: A SIMPLIFIED GUIDE TO SET UP, SELF-PUBLISH & SELL YOUR BOOKS ON AMAZON at http://www.microsofttut.com/2017/08/guide-to-set-up-self-publish-on-amazon.html

SEE ALSO: HOW TO SET UP, SELF-PUBLISH & SELL YOUR BOOKS ON CREATESPACE at http://www.microsofttut.com/2017/08/how-to-set-up-self-publish-your-createspace-book.html

To create an ad for your book:

Step 1: Select an eBook to Advertize:

Remember that you will need to create an Amazon Marketing Services account. Click the Select button to select an ebook you wish to advertize as shown below.

Step 2: Set your campaign name, budget, and duration

Click http://www.microsofttut.com/2017/08/how-to-setup-advertise-your-kdp-books.html to study full tutorial article with screen to screen images