Lenny Rachitsky wrote a helpful and comprehensive guide on How To Get Into Product Management (And Thrive). This is a really good resource for any new product manager. I especially liked his section on seven core skills, and how to get better at each of them. One could certainly argue the validity and importance of each skill, but there are lots of good insights here. For example, on “Leadership through influence”:

In order to succeed you need to be able to build trust with your teammates, make decisions but also give everyone a voice, and keep morale up no matter what’s going on. The best PMs quickly become the de-facto leaders of the team, not because of any actual authority, but because they help everyone on the team do the best work of their lives.