Yes. USCIS publishes a complete list of the 2008 and 2020 version of the civics test. USCIS provides free educational resources to help applicants prepare for the naturalization test. Find study materials for the 2008 version of the civics test and English language test, as well as study materials for the 2020 version of the civics test to help you prepare.

Yes. You should bring certain original documents to your interview. In the instructions to Form N-400, Application for Naturalization, USCIS provides an extensive list of examples of original documents that you should bring to the interview, depending on different case scenarios. Examples of these documents include: original birth, marriage, divorce, final adoption and naturalization certificates; court orders/decrees; evidence of child support payments; court-certified arrest reports; and probation/parole records. Certain certified copies of documents can also be provided. 

You should also submit copies–preferably certified copies–of these documents at the initial filing of your application. These documents should be submitted as evidence in support of your application, and will facilitate the USCIS officers’ review of your request.

There is no limit to the number of times you can apply for naturalization, but you must pay the filing fee for each Form N-400 you submit to the agency.