Their interview questions are pretty basic and the whole product is pretty much useless. Waste of time and money.
LeetCode - Practice and level up your development skills and prepare for technical interviews.
Product School - The global leader in product management training
Daily Coding Problem - Get exceptionally good at coding interviews
PM Starter Pack - Practical guide on how to get started in product management
HackerRank - HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
Software Product Management Stack - Resources & tools to help you manage your software product