How do parts of circuit boards work?

This is a huge question. I want to know the name of all the little parts of a circut board, and how they work, in detail. Lead me to a web site, a video, anything, i HAVE to learn this!!!! please explain this... if you can only tell me one thing, list what the part called a transformer does... its in a battery... show more This is a huge question. I want to know the name of all the little parts of a circut board, and how they work, in detail. Lead me to a web site, a video, anything, i HAVE to learn this!!!! please explain this... if you can only tell me one thing, list what the part called a transformer does... its in a battery desposible camera, and i know it amplifies the voltage how does it work?? also, tell me where i can buy them... ALL PARTS IF POSSIBLE
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