I'd recommend learning about electricity first, or at least at the same time. Reading a map about something you don't understand fully is only going to get you so far. When you truly understand electricity and how it works from electrons and neutrons and protons to how a capacitor stores energy in dielectric stress etc etc you'll be able to make so much more sense of the schematics. And be able to look at them and go ahhh I understand why they used schotky diodes here instead of regular diodes. Get a good electrical text book. There's a very good one supplied in the CET curriculum. This is key to the future of the trade I believe.
