아무...나 vs. question word + -(이)나
There seem to be a lot of ways to say "anywhere", "everywhere", "anyone", etc. What are the differences in meaning and usage?

I've seen use of 아무: 아무나, 아무거나, 아무데나, etc. And I have an online grammar dictionary that says you can append -(이)나 to any question word: 어디나, 누구나, 언제나.

아무데나 좋아요.
Anywhere is good.

도마뱀은 어디에나 있어.
There are lizards everywhere.

Definitions of both variations suggest they can mean any- or every-.

Additionally, I'm curious about attaching -에 first and then -나 in the above 어디에나. Can it be 어디나에? Is -에 needed to suggest "There are lizards AT everywhere (every place)"?

Question

아무...나 vs. question word + -(이)나
There seem to be a lot of ways to say "anywhere", "everywhere", "anyone", etc. What are the differences in meaning and usage?

I've seen use of 아무: 아무나, 아무거나, 아무데나, etc. And I have an online grammar dictionary that says you can append -(이)나 to any question word: 어디나, 누구나, 언제나.

아무데나 좋아요.
Anywhere is good.

도마뱀은 어디에나 있어.
There are lizards everywhere.

Definitions of both variations suggest they can mean any- or every-.

Additionally, I'm curious about attaching -에 first and then -나 in the above 어디에나. Can it be 어디나에? Is -에 needed to suggest "There are lizards AT everywhere (every place)"?

Answer

Forget to mention the difference between them.

아무+st is generally used to describe negative aspects of the feature whereas 누구/어디/언제/etc+나 are not.

달리기는 누구나 할 수 있지만(positive sentencing) 아무나 할 수는 없다(negative sentencing).
사랑은 누구나 한다. (positive sentencing)
사랑은 아무나 하나? (negative questioning)
도마뱀은 어디에나 있어.
도마뱀은 아무데나 있지는 않아.

Answer

어디에나 : 어디에 + 나 (at place + every/any = at every/any place)
누구에게나 : 누구에게 + 나 (to ppl + every/any = to evey/anyone)
누구나 : 누구 + 나 (subject ppl + every/any = every/anyone)

It's basically the problem of understanding -나 in Korean. :D

Answer

Let me ask this question here, because it's all about "나".

I've read that "나" means "or", like "어머니나 아버지가", 
But in this sentence, it doesn't make any sense: "사람은 누구에게나 조국이 있어요." 
I also saw "누구에게나" as "everyone who", which only made me feel more confused then before.