An example development path for a future or newly appointed manager/leader:

Management 3.0 training: foundation
Training: agile people & team leadership
The use of IT tools in managing team work (Jira, Trello, Miro)
Working with requirements in an agile approach
Training: agile change leadership workshop
One team - one dream, i.e. my wonderful team
Design Thinking - Innovation based on understanding user needs
Training: Objectives and Key Results (OKR) method

Check out other training and development paths

All training
For the product owner
For the scrum master