I am planning to buy a few Kindle Books as Amazon as a good sale running, which Books should I buy? I already got the following today:

The Personal MBA: A World-Class Business Education in a Single Volume

All Marketers Are Liars: The Underground Classic That Explains How Marketing Really Works--and Why Authenticity Is the Best Marketing of All

Big Data: A Revolution That Will Transform How We Live, Work and Think

The Effective Executive (Harperbusiness Essentials)

The Lean Startup: How Constant Innovation Creates Radically Successful Businesses

The Four Steps to the Epiphany

Epic Content Marketing: How to Tell a Different Story, Break through the Clutter, and Win More Customers by Marketing Less

What the Dog Saw: and other adventures

Outliers: The Story of Success

Built to Last: Successful Habits of Visionary Companies (Harper Business Essentials)

David and Goliath: Underdogs, Misfits and the Art of Battling GiantsGladwell, Malcolm