11-01-2015, 08:22 PM
[b]Use Amazon Sales Rank to Choose What Your Next Kindle Book Should Be About By Looking at Competitor's Amazon Sales Rank [/b]
https://www.udemy.com/amazon-sales-rank-explained-choose-your-next-kindle-book/
https://www.udemy.com/amazon-sales-rank-explained-choose-your-next-kindle-book/