The Product Manifesto - Product Managers face the biggest challenges of our day, which is why our community needs a common set of product principles.
Xobin - Most Comprehesive Pre-Employment skills testing and Psychometric Assessment Platform.
Intercom on Product Management - The ultimate resource for aspiring product managers
After Interview - Get feedback from job interviews to improve
Product School - The global leader in product management training
Interviews on Skype - Test candidates using a real-time code editor over Skype