GrowthHackList - 100+ curated growth hacks for makers + early stage startups
Growth Hacker Marketing - Ryan Holiday's book, re-released and expanded
Ryan Holiday - We Invest $500k in Sci-Fi Founders.
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.
Your Growth Hacks Aren't Working - Free new book by Steli Efti on B2B customer acquisition
The Craft of Marketing - A weekly interview podcast for marketers, by marketers