How do you use a query?

Excuse me, could you please explain how one goes about using a query in the world of finance and cryptocurrency? I understand it's a powerful tool for gathering information, but I'm not entirely sure of the specifics. Do you start with a specific database or platform? Is there a certain format or language that's typically used? I'm eager to learn more about how I can harness the power of queries to inform my investment decisions and stay ahead of the curve in this rapidly evolving industry.