Software and resources
Besides all the neccessary tools, this is also a must have to be able to understand, diagnose and repair logic boards
FlexBV - board view software
This is absolutely a must have piece of software created by Paul Daniels, a repair technician and a programmer from Australia
We can call it a sort of a map for the electronic logic boards, it allows me to identify and find components in the schematic files. The components aren't labeled in any way when they are soldered onto the logic board
Schematic files
I am able to find schematics for basically all of the MacBook models(this is caused by a high demand)
Lets say those pdf files fell of a truck somewhere near a apple factory in China
Apple and 99% of other manufacturers and brands do not supply the schematics, they do not want people fixing their devices, it is much more profitable to discard old and broken stuff, and then keep selling new devices
These files are basically a documentation on how the logic board is build, how the chips and circuits work and communicate with each other.
Contrary to what Apple says - no, this is not nearly enough to build a MacBook by yourself or anything like that