Intercom on Product Management - The ultimate resource for aspiring product managers
Superpeer Channels - Beautiful livestreams with your subscribers
userinput.io - Get on-demand feedback for your app, website or idea. Learn how to improve by hearing real opinions.
Product Manager Handbook - Interviews w/ product managers + weekly newsletter
ithinki - A simple user feedback tool for start-ups
Co.Lab Learning - A new multiplayer-method of learning online.