In his post, Sachin explains:
I’m often asked what’s the best way for a new product manager to learn the fundamentals of the role or for an experienced product manager to continue to master their craft. Most folks are looking for a pointer to a book or a class they can take on product management, but I always reply with a collection of blog posts from practitioners sharing their best practices. I still believe these remain the very best resources on the topic.
His collection starts with Product Management 101, then explores resources related to vision, strategy, design, and execution. This is a great collection of resources for those just starting out as PMs and those looking to advance in their craft.