Hello there. I would like to try to help the most I can. It's good to stay busy.
For some more reading material, I suggest you look at Wikipedia
. I can spend hours reading Wikipedia going from one topic to another. There are a lot of good tech articles you can look at.
You state your goal as wanting to "be able to build a computer from scratch". You should be able to find a lot of help here. I've learned mostly by myself by taking apart computers and putting them back together.
I'll probably post back later with more info.