That's who I am

Hello everyone!
I'm originally from Russia. I moved to America, New York City almost a year ago. So I want to learn English, I want to improve it all the time. I would be happy if someone would help me. Any help will be very much appreciated. And of course I'm looking for new friends from over the world!
Let's do this!

This is Who I Am.   When you begin to introduce a person or thing, it is better to use "this" rather than "that".  Example:  "Hello, everyone.  My name is Bob, and this is my sister, Mary."

In English, the custom is to state the name of the city before the name of the larger geographical unit.

Examples:  Paul lives in Moscow, Ohio.  Ralph moved to St. Petersburg, Florida.   [Yes, those places really do exist!]  If you want to mention the city and country without mentioning the state, that's perfectly alright.  So you could say, "I moved to New York City in the United States almost a year ago."