Quoted from pbain:(I wish there was good video tutorial on reading a schematic.)
Not exactly a tutorial on reading schematics, but havepinwilltravel on YT has a bunch of vids on fixing EM's, including a lot of schematic referencing... highly recommended.
https://www.youtube.com/channel/UCy4k_pI6HZoH-Yd9TyL3fdQ
This specific vid has an intro to reading schematics...