Hi, Im a student filing my taxes for the first time and I wanted to know what to put for the letter code because on my W-2 form it is blank.

[MichaelMc]

Generally, do not enter anything into TurboTax that is not consistent with the information on the printed for you have received. If a box is blank, leave it blank. If it contains a zero, enter a zero (0). Often, codes on a tax form indicate exceptions to the norm, and a blank conveys just as much information.