What you need to start testing websites
A good internet connection.
A computer (Mac or PC). If you have an Android or Apple device you can also perform mobile and app testing.
Google Chrome web browser. Download Google Chrome
A microphone. Most laptops have a microphone built in which would suffice, you can also use headphones with a mic (the standard Apple headphones work very well too). Same as for mobile. For PC, depending on the model, you may not have a built-in mic and thus may need to use headphones or invest in a small aux or USB microphone.
A quiet place with as little background noise as possible to record your tests.
Eagerness to explore a website and narrate your experience!