Tips on learning this very specific subjects that are not in the scrum guide.

I am still unable to pass the PSM 1. I am getting better and better. But now I’m stuck in these areas.

• Product Backlog Management
• Forecasting and Release Planning
• Stakeholders & Customers

Please let me know where I can test and learn on these subjects, also please do not push me to the recommended readings. Most of them are outdated and are self-promoting to the authors. This has been theming the last 4 years on my odyssey on passing your certification.

Thanks :)