8jaggery

Honestly I feel you guys should take your time lol
There's more than 3k entries i think it's fine if it takes you more than a week

I'd say physically doing stuff is worth way more than any video ever can be (although a video can guide you through the process).
 
Get cheap crappy computers and upgrade them using components you can also find for cheap.  Do silly things with old stuff, like maybe find a 2500K and overclock it till it explodes.  Also hacking together projects on a Raspberry Pi, Arduino or whatever can be very rewarding.  If you don't mind the cost maybe even build a retro computer from scratch.  Basically anything you do on the workbench isn't wasted time.

For that you need to just look at review sites dedicated to that type of stuff, there isn't really a one-stop shop for most parts, it's going to be scattered about a bit.

Please don't remind me of Portal.