What and how you study is totally at your discretion.
But, if you are studying finance for the first time, I strongly recommend you follow the contents in a top-down order, starting from the Study Tips.
Study Tips
Ways to really understand.
Underlying Assumption
Knowing this makes difference.
Time Value of Money
It’s all about this.
Present Value (Basics)
How much the future costs.
Present Value (deeper dive)
You don’t need to know this much, but helps.
Discount Rate
This defines your competency.
Net Present Value
Application of the concepts.
Value of perpetuity.
Terminal Value
Complicated? Not really.
Internal Rate of Return
Modified Internal Rate of Return
Less popular. More powerful.