As Bitcoiners, we often encounter the crucial question:
Okay, but what is Bitcoin at the end of the day, and how does it work?
From my experience, I've learned that a comprehensive single resource, be it a video or an article, can be very effective in providing the interlocutor with a clear, albeit high-level, understanding of what Bitcoin is.
Currently, I believe my go-to is this 3Blue1Brown video.
What's your go-to resource to explain what Bitcoin is and how it works?