Some coin collecting questions.

I'm probably am going to be asking a lot of questions on here, hopefully not dumb ones .
Also what is a details grade?

 

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On the 1964 D i am aware that it doesn't have any value, im just asking so i get a better idea of what different grades look like.
On this coin I still would like to know if there is a way to get the gunk off. I save older copper cents that I get in pocket change. Also I would like to know incase I find a more valuable coin that has something on it.

 

is that the American numismatic association? I tried typing just ANA into YouTube and it brought up a bunch of stuff that definitely was not about coins.

 

In G-4, if it's copper-nickel (should weigh at least 5 grams if it is), a problem-free example bids at $18, so my buy/sell margin would likely be $7/10, although I'd knock the sell price down to $9 if a customer bought multiple coins, and $8 if it sat for a while.

 

Most graders look at the Obverses of the coin first, and it's the Obv that carries most of the weight in the grade

 

It's far more dumb to not ask questions than to ask dumb questions. But there are no dumb questions, so don't worry. We've all been there.

As for a details grade:

"A "details grade" (often called a problem coin) is a non-numerical grade used by professional coin grading services like NGC Coin or CAC Grading. It indicates a coin is identifiable but has surface damage, alteration, or problems that prevent it from receiving a traditional number grade on the 70-point Sheldon Scale."

When I see "details" on a slab my mind processes it as "problem coin." I avoid them, but not everyone does.