Product Resources List - The biggest list of free product management resources
The Product Manifesto - Product Managers face the biggest challenges of our day, which is why our community needs a common set of product principles.
Product Wednesday - Every Wednesday, receive a handpicked selection of tools made for Product Managers, Product Designers, UX Researchers and every member of the Product team.
Project Management Templates - Work smarter with free project management templates from pro project leaders and save time documenting any type of project.
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