Growth Hacker Marketing - Ryan Holiday's book, re-released and expanded
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
GrowthHackList - 100+ curated growth hacks for makers + early stage startups
Content Marketing Playbook - Built from 12 years and 83,232,485 visits. By Hiten Shah.
Spacedoo - Short actionable marketing hacks