The best way for it would be to create a valuation model of a few public companies and understand their model.
I would say Amazon, Apple, Coca Cola, and Shopify from an international standpoint
Or,
HUL, TCS, Adani from India
Only when you create a financial model from scratch and understand each line item would you get a thorough understanding of the business the company is in. How it's making money, it's cost centres, etc.
Learning curve is there, but this activity would provide you much more understanding on the different types of business models that can be there and you'd be able to apply it to your VC career as well.