How to setup the Usability Test and how to evaluate the results?

I am new to UX and trying to learn all the methodologies. I am now learning and understand how setup the Usability Tests and how to hen evaluate the results.

Can you please share some of your real your experience about what steps/process were done to do some Usability Testing? And then when you gather all the details from the usability testing, how you evaluated the results?

Thanks a lot in advance!