Start small. Have you got a data source to work from? Plan it like an actual business project where the Roman Emperor is your customer.
What would Julius Caesar have wanted to see on his weekly dashboard in terms of KPIs for the Empire? Then build that up one step at a time. Even start with something static in Excel to get a framework together and move it up to Power BI or Tableau when you have a clearer picture of what you want to be looking at.
Sounds like an interesting project, be sure to share it with us when you get started.
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.