If your first manager role started like mine, your boss slid a promotion document across the table and said, "Congratulations, you're now a first-level manager. Good luck"
I didn't find good support as a new manager trying to navigate the jump from engineer to "engineer + people manager". Instead, it was a slog, lots of missteps, and eventually got easier with more experience. But developing the right soft skills, learning to better manage priorities, and simply being comfortable even 'being' a manager took time.
What advice would you give a new manager just starting in the role? If you could start over, how would you make yourself a great manager, faster?