Product Courses at play

How many of you are paying for product courses? And what are you finding useful vs not? I am open to sharing about 3 courses I've experienced: Alex's PCA : great for building network among senior and more experienced PMs, and great at reviewing your inputs. Pretty standard in terms of materials. Mahesh Yadav : Great for folks who need to learn about AI and catch up. Not a great place for general PM interview prep or networking with fellow PMs. Nancy Lee : Pretty good for building a PM brand, decent for prepping. Not a great one for ramping up on new AI concepts. Please share your experiences and what courses/resources you are using?