Growth Hacker Marketing - Ryan Holiday's book, re-released and expanded
Userfront - Know thy startup: metrics & triggers for growth
Ryan Holiday - We Invest $500k in Sci-Fi Founders.
Analytics Pack - A curated directory of the best startup metrics
TweetFavy - The Growth Hacking Tool for Twitter. Marketing automation software / Growth Hacking tool designed to grow your social media influence and attract real, targeted and engaged Twitter followers.
The Craft of Marketing - A weekly interview podcast for marketers, by marketers