How to trace a transaction ID?

Hello there, I'm curious about how one can trace a transaction ID in the world of cryptocurrency. As someone who's not too familiar with the technicalities, could you explain the process in a simplified manner? I understand that every transaction on a blockchain network has a unique identifier, but how exactly do I go about finding the details of a specific transaction using its ID? Are there any specific tools or platforms that I should use for this purpose? And are there any privacy concerns that I should be aware of while tracing a transaction? I'd appreciate your insights on this matter.