How do I get a hash transaction?

Excuse me, I was wondering if you could help me understand how to obtain a hash transaction. I'm new to the world of cryptocurrency and finance, and I've heard that hash transactions are important for ensuring security and authenticity. Could you please explain the process in simple terms? What tools or platforms do I need to use, and are there any specific steps I should follow to generate a hash transaction? Thank you for your time and assistance.