Intercom on Product Management - The ultimate resource for aspiring product managers
The Product Management guide - A book on how to create and ship products that people love
userinput.io - Get on-demand feedback for your app, website or idea. Learn how to improve by hearing real opinions.
The Product Folks - A volunteer-led community of product managers and makers
ithinki - A simple user feedback tool for start-ups
PM vs PM Challenge - That inner voice doubting you - “Am I a PM?