There is no such animal
As a computer expert.
There will always be something that someone doesn't know.
But with the wealth of information on this forum it should be quite easy to gather a lot of basic computing information. It needs only the members to subit and the administration to accept.
Editing of pages could be done by a group of the best to eliminate the possibility of incorrect information.
It seems that I may have to write some training information for work and I would be happy to submit these for scrutiny to ensure accurate information.
IMHO the first should be about Fdisk and partitioning as this is common to all hardware.