How to get started with learning electronics?
How I personally got started, was by first buying a Raspberry Pi (and later arduino) and learn how to turn on and off an LED. I just copied the circuit from online to start, then when I got it to work, I tried to understand why the circuit is done the way it is (in this case why are we using a resistor between the Raspberry Pi and the LED). I continued doing LED projects like this getting more and more complicated every time. The Raspi is basically a mini computer that can help simplify your circuits when you are first starting out.

I then would start trying to build circuits without any sort of micro controller in them, using the same process I stated above. Once I felt comfortable building a few circuits I practiced soldering them on perfboard. Then finally I spent a few days learning how to use a PCB design software like kiCad and made a couple of my own PCB's.

The most important thing is to start small. A smart watch may seem small but it isn't going to end up being small. Be proud of every circuit you create no matter how simple, because each is a step closer to your goal.

A few resources


Raspi Blink Best place to start
Youtube Try searching for electronics basics, and you can find countless videos, these helped me a bunch
kiCad DONT jump into this write away


Hope this helps!