Wow, what a story. It almost sounds like a fiction.
I do think that if you are doing nothing else illegal, and just mining, then the reason why all this happened was probably because of your electricity usage, especially when you are living in an apartment. Using so much electricity is simply not normal.
It could be possible that the police is working in conjunction with the power companies to catch weed growers, i don't know. It's a really wild guess. I have never mined with a lot of equipment consuming tons of energy, nor have i ever grown pot indoors. So i don't know man. Just try to not make yourself look too suspicious and you'd be alright.
Yeah it's a lot to process, it's been about two weeks since who the weird guy showed up about 5 days since I received the books as a "gift". It's kind of a lot to process and it led me to setting up some cameras (specifically right after the guy was scoping the apartment out). When I received the books I was not sure if maybe a passive aggressive neighbor was trying to tell me something (because I got those after the camera went up so maybe they notice that) both kind of make sense but I think what I posted here initially fits best.
I don't have anything to hide but it does make my mind run and it's a bit nerve wrecking.