What booklet can I study to become a U.S. citizen?

Question

I am a Canadian citizen, been married to a U.S citizen for 30 years, how can I get dual citizenship? Also I was diagnosed with M.S., 5 years ago, after working 22 years.

Answer 1

Here is the official and maybe best resource: See the sample test questions especially.
http://www.uscis.gov/graphics/citizenship/index.htm

Answer 2

here is some questions that they might ask...hope u find it helpful..
http://usgovinfo.about.com/blinstst.htm