There is a reason why they call it "electrickery" .
I spent more time explaining basic circuitry to the electroplaters than the chemical metallurgy & crystalography that I was being paid to teach them .
Nearly every one I know had a toy "Dick Smith's Fun Way Into Electronics " when they were young, often before they went to school they were making circuits that made fart noises .
But the do gooders decided the kits had sharp bits that might cut Diddiums precious little fingers so they all had to be withdrawn & redesigned .
hey were hardly back on the market when the same do-gooders decided they had small bits that kids might swallow so again they got withdrawn.
At school electronics gets taught as a really dry mathematical subject that turns most students off because they can not cvisualize it.
IT is really simple when you stop making it confusing
All circuit are essentially a loop from the - to the +
Then we really confuse things with terms like Ground or Earth which have no place in DC circuitry but sneaked in from AC distribution where the actual ground we stand on is part of the circuit because one side of the generator ( alternator to be more accurate ) is connected to a big copper stake hammered into the ground
So you will find things a lot easier if you always think of things as either + or -So to find a short in the - side you need to hook a test lamp to the + side of the battery .
When I first came here I tried to do this but it seemed to get every one confused because the idea that "ground" or "earth" was just closer to the negative side of the battery was beyond them .