Do Things That Don't Scale - Discover new unscalable ways to grow your startup
Growth Hacker Marketing - Ryan Holiday's book, re-released and expanded
Fibery - Work management platform that adapts to companies and grows with them.
Your Growth Hacks Aren't Working - Free new book by Steli Efti on B2B customer acquisition
GrowthList - A crowd-sourced list of growth hacks
Spacedoo - Short actionable marketing hacks