Product Resources List - The biggest list of free product management resources
Product School - The global leader in product management training
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.
Faves - Curated content from silicon valley's greatest minds
Intercom on Product Management - The ultimate resource for aspiring product managers
Foundora - Human-curated Reading List & Content Hub for Entrepreneurs.