Product Collective put together this Ultimate Product Management Resource Handbook to provide a guide to some of the best resources out there for Product Management.

SUCCESSFUL PRODUCT MANAGERS ARE INHERENTLY CONTINUOUS LEARNERS
Successful product managers are inherently continuous learners.
They’re constantly learning about their customers. They need to learn about what opportunities exist to help those customers.
Product managers also need to keep up to speed with the new product techniques and trends in their domains.
And don’t forget that there are only a few, if any, formal degree programs for product management.
Fortunately, the broader product management community has made the lack of degree programs a feature rather than a bug. Because there is no official source of product management knowledge, product managers across the globe have taken it on themselves to share experiences: both successes and lessons learned the hard way.
In fact, there are so many resources available about product management that it can be difficult to find the truly helpful ones.
Don’t worry—your friends at Product Collective, ProductLed, Productboard and Chameleon have you covered.