Startup Stash - A curated directory of 400 resources & tools for startups
Software Product Management Stack - Resources & tools to help you manage your software product
Makerbook - A directory of the best free resources for creatives
The Product Management guide - A book on how to create and ship products that people love
Freebiesjedi - Discover & download useful freebies everyday
Product Management Exercises - A repository of product manager job interview exercises