For the most part, drivers are handled by the OS (Windows 10), with video drivers being handled by AMD's or Nvidia's control panel software. So it's pretty much seamless anymore. It sees an update, and you can set the OS up to auto-update or download them and install them when you want to.
The only time it is an issue is when you are running an older piece of hardware that doesn't have updated drivers, but seeing how you have a pre-built you should be fine.
Steam, UPlay, Origin or any game launcher handles game updates. It seems it, downloads and installs them. Nothing for you to do.
For videos, check out this list ->
https://www.youtube.com/results?search_query=Every+NEW+PC+Gamer+Should+KNOW
You didn't mention what proc is in your PC, but there is software to monitor your PC temps. Plus if your PC gets really hot, to the point where it shouldn't, it will power off the PC. I recommend any of the following to see your temps, and more.
1. Speccy -
https://www.ccleaner.com/speccy
2. HW Monitor -
https://www.cpuid.com/softwares/hwmonitor.html
3. Core Temp -
https://www.alcpu.com/CoreTemp/
Lastly, why not drop your questions here, someone will likely help you out ;)