To apply for naturalization to become a U.S. citizen, you must:

• Be at least 18 years of age at the time you file the application;
• Have been a lawful permanent resident for the past three or five years (depending on which naturalization category you are applying under);
• Have continuous residence and physical presence in the United States;
• Be able to read, write, and speak basic English;
• Demonstrate good moral character;
• Demonstrate a knowledge and understanding of U.S. history and government;
• Demonstrate a loyalty to the principles of the U.S. Constitution; and
• Be willing to take the Oath of Allegiance.

Please refer to the following link:
https://www.uscis.gov/citizenship/learn-about-citizenship/10-steps-to-naturalization

You are exempt from the English language requirement, but are still required to take the civics test if you are:

• 50 or older at the time of filing for naturalization and have lived as a permanent resident (Green Card holder) in the United States for 20 years (commonly referred to as the “50/20” exception).
OR
• Age 55 or older at the time of filing for naturalization and have lived as a permanent resident in the United States for 15 years (commonly referred to as the “55/15” exception).

Otherwise, during the English test, you must demonstrate an understanding of the English language including the ability to read, write, and speak basic English. (USCIS)
You can find a full list of exemptions here

You can file online or on paper.

• Instructions for creating an online account: https://www.uscis.gov/file-online/how-to-create-a-uscis-online-account
• Instructions for filing the paper form, known as the N-400: https://www.uscis.gov/n-400

USCIS (United States Citizenship and Immigration Services) is the official source of citizenship and naturalization information.
Resources to learn more about citizenship can be found here: https://www.uscis.gov/citizenship/learn-about-citizenship

• https://www.uscis.gov/n-400
• This is your application. It needs to be completed to get to the interview
• You need enough English proficiency + preparation to answer any questions that this form covers

• https://www.uscis.gov/sites/default/files/document/questions-and-answers/OoC_100_Questions_2008_Civics_Test_V1.pdf
• You need to pass 6 out of 10 questions at the actual interview
• Currently 100 questions in total that could be asked

• https://uscitizenshipsupport.com/us-citizenship-test-reading-test/
• https://www.uscis.gov/sites/default/files/document/guides/writing_vocab.pdf
• Given a max 3 sentences to read -- need to pass one
• Given a max 3 sentences to write -- need to pass one

• http://www2.estrellamountain.edu/faculty/stonebrink/naturalization%20citizenship_mock_interview-_minus_100_qs.pdf
• Some interview questions that may be asked by interviewer during process