Citizenship Through Naturalization:
Naturalization is the process by which U.S. citizenship is granted to a foreign citizen or national, after they have fulfilled the requirements established by Congress in the Immigration and Nationality Act (INA).
USCIS English: https://www.uscis.gov/us-citizenship/citizenship-through-naturalization
USCIS Español: https://www.uscis.gov/es/ciudadania/ciudadania-por-naturalizacion
A guide on how to apply for citizenship: https://www.uscis.gov/sites/default/files/USCIS/Resources/B3en.pdf
Guia para solicitar ciudadania: https://www.uscis.gov/sites/default/files/files/article/B3esp.pdf
N-400, Application for Naturalization: https://www.uscis.gov/n-400
N-400, Solicitud de Naturalización: https://www.uscis.gov/es/formularios/n-400
N-600, Application for Certificate of Citizenship: https://www.uscis.gov/n-600
N-600, Solicitud de Certificado de Ciudadanía: https://www.uscis.gov/es/formularios/n-600
Study for the Naturalization Exam: https://www.uscis.gov/citizenship/learners/study-test
100 Civics Questions and Answers: https://www.uscis.gov/sites/default/files/USCIS/Office%20of%20Citizenship/Citizenship%20Resource%20Center%20Site/Publications/100q.pdf
100 Preguntas para el examen de Ciudadania: https://www.uscis.gov/sites/default/files/USCIS/Office%20of%20Citizenship/Citizenship%20Resource%20Center%20Site/Publications/PDFs/100q_Spanish.pdf
Exceptions & Accommodations: https://www.uscis.gov/us-citizenship/citizenship-through-naturalization/exceptions-accommodations
Excepciones y Ajustes: https://www.uscis.gov/es/ciudadania/ciudadania-por-naturalizacion/excepciones-y-ajustes