Lumosity - Discover what your mind can do. Improve memory, increase focus, and find calm - with the #1 brain training app. Get started now.
Intercom on Product Management - The ultimate resource for aspiring product managers
Brain Workshop - Brain Workshop is a open-source version of the dual n-back brain training exercise.
The Product Management guide - A book on how to create and ship products that people love
Brainturk - Improve your brain performance by playing 40 + brain games designed by brain researchers and psychologists based on principles of neuroplasticy. It is free to start playing online. Challenge your brain!
Software Product Management Stack - Resources & tools to help you manage your software product