So I'd like to get into modding. I've seen a bunch of guides to building them, but none go into what each piece does. If I ever want to build anything of my own design I'll clearly need to get an understanding of what all the parts are doing. So my question is, where's a good place to start learning circuitry? Are there any books or websites? I'm gonna be ordering a couple of the cheap kits from madvapes as well as a 5v kit for the hands on aspect. But I'd really like to know more than the guides offer.