You're really asking a question that is so wide open nobody can give you a good/correct answer.
A "Computer Tech" "related to computers, hardware wise and OS wise" is a never ending lifetime learning experience.
Learn whatever you can in your course, and hopefully you will have a good teacher that will help you as much as you want.
It is the first step in the journey
Start by picking one area of study to focus on.
Hardware, Software, Windows, MAC, Mainframe, Server, Corporate Support, Home User Support, Security, Programming, DB specialist ...
My guess is the SF experts here have spent several years in learning Windows 7.
They have taken the time and put in the effort to create the tutorials and share their knowledge.
Many of them seem to also have a lot more years in Technology related experience...other than Win 7.
If you think the SF forums info is scattered, re-think what you are asking for as far as "Computer Tech" and all the info available on the web...
I wouldn't even want to guess at the number of PDF's related to "Computer Tech" that are out there...
hope this helps,