Let me google that for you
If you are going to follow a tutorial, you want to make sure it uses the same distro AND ui.
Also using IRC would help tremendously in your case.
What isn't wrong with your PC.
If its freezing while in windows and no bluescreen error its either the HDD or Mobo.
If rebooting while post if could be the PSU or Mobo. HDD would process an error.
If those 2 happen and you get BSOD ontop of that, its the processor.
I am not sure why you must have your PS4 hard wired?
Do you run a Gigabit line to your house?
Basic Wireless G technology is 54Mbps which is more then sufficient more MANY home connections.
I believe you may want to hire someone to assist you in your endeavors.
Either someone local as a secretary or assistant.
You could also look at certain freelancing sites which you can hire people for certain hours at a lower cost.
Not sure what kind of work you do or what the tablet will be used for and I believe there are no budget constraints so here is what I am throwing out there.
Buy Microsoft Surface Pro 4 - Microsoft Store
I would certainly get the 1 stick of 8GB, that way it allows you to upgrade to 16GB in the future.
A SSD card will certainly be a good upgrade for you.