Car repair manual, TSBs, technical information, check engine light codes, diagrams and more

I often receive questions about where to find specific car or truck repair manual or other technical information, such as Technical Service Bulletins (TSB), certain diagrams, or specifications such as correct transmission fluid type, torque specifications, check engine light codes, and so on.
There is a website where you can get an instant access to this type of information for a small fee.
I used this website myself many times and found it very useful. This is an online diagnostic repair information for the automotive do-it-yourself enthusiasts. This is the type of information auto repair shops use.