Show HN: ProductVitamins – Library of great resources for product managers

I built this because I didn't find any good quality library of resources for product managers. Usually it's a simple list with just a few informations. I've put all those resources in categories such as books, apps or podcasts but also by topics like interviews, prototyping etc. I've also added metadata to each items like the price for courses or the read time for articles. Tell me what you think.