there is no minor things in aviation. Just learning to save my ass ~
Looking over the posts you've started, ill very clearly state that most of those trivial items won't save your ass.
Stuff like the "fuses in a G1000" equipped airplane thread (as one example) is right in the POH/AFM for the aircraft and if you're flying one, you'll be buying a copy and can reference it directly.
Stuff like the "VOR cone of confusion" has been in every text I've ever read that discusses VOR navigation, including the FAA free material.
So I'm concerned when you say you're "reading" but you're also "overcome with curiosity". These things are very well explained in the texts you're supposedly reading.
Which is why my intuition tells me something is not right with either your study process, or the story of why all the odd questions.
There's also the practical side of this concern: If you are flying and have ever flown over a VOR you have SEEN the answer to the cone of confusion question, because it's blatantly obvious. The CDI bangs off of the stop and does all sorts of screwy things.
Which is why it's in the texts, after all. Application of this "knowledge" you're seeking is required in the actual aircraft.
Which just has me curious... are you flying now? Because all of this stuff becomes a whole lot more obvious if you are. If you're not flying, many of the topics raised are important at all.
Or more directly: What are you "saving your ass" from if you're not out flying yet? Lots of trivial and somewhat detailed questions about IFR flying seems to indicate you're working on an Instrument certificate?
If not, it's obviously not bad to study and even not bad to head off on odd tangents, but don't say they're going to "save your ass". I don't think you have spent enough time flying, just judging by the questions, to know what will "save your ass" yet.
I can't fix your "story" but I can help with the study process.
Here's a set of questions for you to study that really might "save your ass":
What is the most common accident in flying aircraft?
What would you need to know or be able to do to avoid it?
Bonus question: Is the most common accident type also the same when the accident is fatal?
If not, what would you need to do to avoid fatal accidents?
Point the "curiosity" at those things. Empirical data proves that they're what is really important in ass-saving.