Pramp for Product Managers - Practice product management mock interviews with other PMs
Xobin - Most Comprehesive Pre-Employment skills testing and Psychometric Assessment Platform.
The PM Interview - Practice PM Interview Questions (w/ timer).
Myskillwall - The best tool to prepare your job interview
Apply to YC (Y Combinator) - Curated collection of resources for founders applying to YC.
After Interview - Get feedback from job interviews to improve