How should I fill the meta tags?

Question

I could find ways to fill other meta tags but these, I have no idea. Does anyone have any idea?

<meta content='xxxxx' name='alexaVerifyID'/>
<meta content='xxxxx' name='yandex-verification'/>
<meta content='India' name='geo.placename'/>
<meta content='xxxxx' name='Author'/>
<meta content='general' name='rating'/>
<meta content='id' name='geo.country'/>

I think I should put the description here, right?

<meta content='xxxxx' property='og:description'/> 

Here I do not know if I leave so since it is filled or if I should put acronyms of Brazil.

<meta content='en_US' property='og:locale'/> 
<meta content='en_GB' property='og:locale:alternate'/>
<meta content='id_ID' property='og:locale:alternate'/>