"Growth Hacker Marketing" by Ryan Holiday book summary

Growth Hacker Marketing... a primer on how marketing is evolving, with real strategies and tactics by Ryan Holiday, the former director of marketing at American Apparel, recently turned media guru for best-selling authors.

In Growth Hacker Marketing, he explains why traditional marketing efforts aren't the most effective, and shows what we can do about it. The Growth Hacker Formula consists of:

Achieving product-market fit...
because it all starts with selling something people really want;
Finding a growth hack to go viral cost-effectively;
Closing the loop with high retention
turning one-time transactions into sticky or repeat customers. In order to better follow this formula, we're going to tackle:
What is growth hacking;
What does it mean to achieve product-market fit