For basic cases where you just have employment income less than $92,000 and nothing more complicated, use 1040 + 2555-EZ to exclude your foreign income if you meet the requirements for doing so (the instructions are on the form to figure out if you do). If you have any bank accounts that earn interest, add Schedule B, and if you have a combination of bank accounts that at any point in 2012 added up to more than $10,000 (even for just a day), you have to file an FBAR (TDF 90-22.1) with the treasury department too.