The best way to prepare for a product manager interview is to analyse the market behavior closely and anticipate the prospects in-order to assess the organization or industry you aspire to work in. Most product manager interview questions revolve around how well you can execute the challenging decision making process and deliver with the team.
If you are an aspiring product manager and wish to explore those jobs, you must work on developing a comprehensive skill set matching the profile of a successful product manager. Be well prepared to answer all product manager interview questions and the job will be yours.
While learning about how to be a product manager or cracking a product manager interview, you should also apply those things to yourself, including how you represent yourself while looking for jobs. This is basically the practical application of your theoretical knowledge gained from books, connections and other resources.