That's because you need to be a permanent resident for 5 years to be eligible for N-400 (3 years if married to a US citizen), unless you have served in the US military.
Many questions in the N-400 form ask about being a lawful permanent resident!!
Neither. You are a nonimmigrant. Apply for a green card, live in the US with the green card and your US citizen spouse for 3 years*, then you can apply for naturalization.
Am I considered as conditional or permanent resident or what?
Nowhere, because you can't go directly from F-1 to naturalization.
Where can I find information about naturalization for people on F-1 Visa?
*there is a 90-day early filing period, so you can apply 90 days before you've completed 3 years as a green card holder, but your citizenship can't be approved until you've completed the full 3 years.
Last edited by Jackolantern; 31st August 2012 at 09:29 AM.
PD: Jan 2003 (EB3 rest of world)
I-485 Approved: July 2007
I am a layman, not a lawyer. What I write here is not official or professional legal advice. In addition, my answers on this forum are specific to the scenarios discussed in each thread and should not be generalized to other situations.