You can usually find step by step instructions for fixing most cars. My library has a subscription to Chilton online, so I can use it from home and look at repair procedures and wiring diagrams. Just use forums and YouTube to fill in the gaps. I've even diagnosed a car from Amazon reviews since I suspected a certain part was bad and looked at reviews that said the exact symptoms.
What really chaps my ass is when they don't bother to tell you. It always happens when I'm filling out a form and find out that the submit button just doesn't do anything. Then I have to go back through chrome just to fill out the same form a second time.
It's pretty rare to have high performance requirements in an embedded application. Many people load one project onto their pi and for most cases it's overkill. If you need modern codecs, then buy a streaming box. If you want a nas, then buy a nas. You also need to factor in the additional $20-$30 of stuff that you need just to boot up a pi.
It comes with built in storage and a power supply, plus a passive cooling system, a case obviously, and removable RAM up to 16gb. It has dual display port, idk about resolution, I run it headless anyway. There is also a bigger version with a pice slot.
You want to have at least 3 if you're going to do that. I usually use the one on the mobo for all the other services and management. Then a dedicated port for lan and wan on a separate nic.
Saying stupid shit generates engagement and pushes your post to the top of social media. Stop falling for bait.