Hi, I found out that there were already threads about something like your first multimeter, etc. Now, I think sharing (and maybe talking) about our first circuit would be fun as all of us had our beginning days.

...And hopefully, it could inspire and motivate some beginners and newbies too.
So here we go, let's start with mine.
Back in the day, when I was 8, I was really interested in analog audio stuff. I was not really interested in electronics back then, I just loved connecting wires (and lots of them) on audio systems

. But while surfing on the web, I was directed to this circuit which says that the LEDs will light up depending on the intensity of the sound.

I then went to my local electronics shop to buy some parts and connected some bare wires to the transistor. And to my excitement, it worked perfectly!
This was a thing of beauty for me and so that's how I got into electronics.
Anyway, that was my beginning. What's yours?