Hello! I am from the USA.

[Grammatically_Correct]

I am from the USA. I am here brush up on my grammar skills and get a better understanding of the English language.

[Boke]

Are you also a troll?

Doesn't seem like there are many trolls on this forum so I'll guess you meant that you live in America?

[Lost_Soul]

Hi, Boke
what does "troll" mean in your context ?

[Boke]

a "troll" on the internet is someone who tries to make people angry on purpose by saying stupid things

Next time say "I am in/living in America"

if you say "I am from America" everyone thinks that you were born/raised there