Help with FF Beta Test APK Installation

Hi everyone,

I’ve downloaded the FF beta test apk but I’m unsure about the FF beta test install process. Can anyone provide a FF beta test tutorial or step-by-step FF beta test guide? I want to Get FF beta test safely and make sure it’s the Official FF beta test. I’m also curious about FF beta test features and any tips for FF beta test mobile users. Any info on FF beta test mirror sites would help.