How do I find a bitcoin transaction ID?

As a cryptocurrency enthusiast, I'm often curious about tracking my bitcoin transactions. Could you please explain, in a step-by-step manner, how I can find a bitcoin transaction ID? I'm aware that each transaction has a unique identifier, but I'm not sure where to look or what tools to use. Additionally, I'd appreciate any tips on how to verify the authenticity of a transaction ID and ensure it's not a fake or manipulated. Thank you for your assistance in navigating this often complex yet fascinating world of digital currencies.