Don't sweat it! There are no stupid questions, only stupid...People? No, that's where I work. LOL j/k
As for learning to fly on a toy grade quad, that's fine! I'll tell you that some people are really against it, but there ARE some benefits to it - namely, that you can learn how to fly when it's coming back at you (left is right, right is left, etc.) when flying line of sight (or LOS, as you may see abbreviated).
I'll chime in with my 2 cents on FPV cameras - the AIO cameras, you get what you pay for. They're cheap, they fill a niche, and then you learn about other options.
On a micro quad (i.e., the TinyWhoop/Inductrix frames), the all-in-ones aren't a bad option; the quads are light, and while it's possible to kill the cameras, due to the weight and mass, they're pretty hard to damage seriously. Is the quality good? Eh...I've seen better on the larger quads, that's for certain.
As someone mentioned before, the RunCam Swift camera is a great way to go (all of the RunCam cameras are pretty darned good, as a matter of fact!), and would be ideal for the Gremlin. That said, it DOES up the cost of the Gremlin, which, I feel (and take it with a grain of salt, as this is my OPINION) isn't quite what Josh and the rest of the guys have in mind with trying to make RC flight fun and affordable, so that anyone can jump in.
Now, one thing that I see Balu touched on, and I'll bring up, is goggles - or more specifically, FPV headsets. I have seen a few people try to fly FPV looking at a screen attached to their transmitter, and it never seems to work for them for a myriad of reasons - it's too bright outside to see the screen, they start looking up from the screen to see the quad, or worse, they focus solely on their screen without paying any attention to the goings on around them.
(That is what spotters are for, by the way; highly recommended that you fly with one, as they can warn you of other aircraft near you, other objects outside of your field of vision like an incoming plane that's out of control, and they can also tell you where your craft went down if you crash)
So, you have 2 choices when it comes to headsets - either a bigger, box style goggle like the Quanum Cyclops goggles, or the smaller, separate screen goggles like the Fatshark series.
Both have their pluses and minuses. The box style goggles have to be longer, so as to effectively give you a good viewing distance without blurring your vision, but it also means that they're generally bigger and bulkier to wield and wear. Fatshark style goggles, from my experience, tend to be smaller screens, but clearer, and lighter, than the box style headsets; however, the decent pairs are in the $400 range, as opposed to $60 for the Cyclops V2 goggles (which are what I would recommend if you are starting out with FPV, and if you move up to Fatsharks, you have a backup pair of goggles for demos to people and ride-alongs)
Hopefully I didn't throw too much at you with all of this, but if ANY of it helps, I'm glad it does! And again, most of this is my opinion, so take it however you like...I'm sure some will disagree with it; it doesn't bother me.
