Growth Hacking Sourcebook - The ultimate growth hacking sourcebook
GrowthList - A crowd-sourced list of growth hacks
Weavr Cafe - Weavr is a platform to build active learning communities.
GrowthHackers Projects - Growth collaboration software for teams 📈
Tiny Marketing Wins - Get a (small) marketing tip every day
Marketing Examples - A gallery of real world marketing case studies. Updated every day.