Where to start?
Well...when I bought my first computer...I had no clue what I wanted...but I could read. So I read a number of copies of Computer Shopper (a common source of knowledge about systems for sale in 1996). Once I bought my system, I read the owner/user manual and started searching online for more info about Windows 95, my O/S then. Those days were akin to being lost in a forest for me...but eventually I recognized the value of the search engines existing then.
As I learned more, I gravitated toward a couple of well-known forums as sources of knowledged. In the process of learning, I found that I knew more than some others about certain aspects...because I had experienced or experimented with this/that.
The landscape now is entirely different.
If you have an OEM system...the OEM provides support info about the system. If you don't have an OEM system, a user can find much useful basic info about the components...within the board manual and at the manufacturer's website.
Ditto for the O/S...much info available at www.micrososoft.com if Windows is the O/S in question.
Google...is a much better search engine...than anything that existed whne I joined the computer-user world.
There are still reliable forums where a community-sharing of knowledge and experiences...can serve to educate those of us who want to learn and not merely be handed "answers".
Knowledge is available...if any user chooses to look for sources of such .
"Answers" (which is what too many persons really want) is not the same as knowledge. People accept "answers" with the same mindset they use when taking an aspirin, they merely want the pain to stop...for the moment.
I suggest that you not search for "answers" in the very large world of computing (which changes somewhat every day)...but seek knowledge that will assist you in deriving the greatest amount of satisfaction and reliability...from your system.
If I'm able to help...that's a good thing and I give it in the same spirit that I daily accept so mauch assistance...from others.