PM Starter Pack - Practical guide on how to get started in product management
Pramp for Product Managers - Practice product management mock interviews with other PMs
Product School - The global leader in product management training
Speechapp - The simplest way to practice for your next job interview
know/how Product Managers - A weekly newsletter with 5 practical tweet-length PM tips
Xobin - Most Comprehesive Pre-Employment skills testing and Psychometric Assessment Platform.