I've been doing household elctrical repairs as long as I can remember. I even wired a complete room with a circuit breaker box and power meter.
That said, you should continue learning, before anymore repairs come up.
Electrical is pretty easy, but you need to do it right, to protect yourself and the property.
Make sure you make good connections, (a bad connection gets hot).
I once added a heavy load to a circuit (two chest freezers) it was fine, the circuit breaker never popped. However a couple years down the road I had a burning smell in my living room. That first time I didn't find the source and the smell disappeared. I had several cycles like that, before I notice the plug on my tv at one outlet was hot. From there I opened up the wall and found the outlet was just about to crumble. This was about 35 years after the home was built. I suspect it had a slightly bad connection and then over the years it just got worse.
This outlet had a feedthru, meaning power came to the outlet and a wire left carrying power to the the next outlet and then to my two freezers. when the freezer or freezers ran the outlet got hot (at that bad connection) and smelled, as soon as the freezers shut off the outlet cooled off and no more smell.
Anyway, it had been over heating long enough that the wire was overheated about a foot back, I had to cut the wire back and add new wire to get to the outlet.
That could have turned out much worse.
btw, after that repair is when I ran a new line, installed a circuit breaker box and several new outlets for the freezers. The incident shook me.