u/Fugeent

I’m 20 years old and recently started working in Bangalore. My current salary is ₹25k/month for the first year, and after that it will be around ₹8 LPA.
I don’t come from a finance background and want to build good money habits from the start. I have a few questions:

How much should I save vs spend each month?
Where should I keep my emergency fund?
When should I start investing?
Should I focus on mutual funds, ETFs, stocks, or something else?

Any common mistakes to avoid in my early 20s?
I’d love a simple roadmap that you wish someone had given you when you started earning.

Thanks