How to efile tax this year if we did not need to file tax last year?

I was student last year and had no job or income and did not need to file tax, how can we efile this year, or must we file tax by mail only?

Please apply asap.

Yes you can efile still, you must use the following procedure; when your software asks you to enter your prior year AGI.

Enter “0” (zero) for the original Prior Year AGI. Do not leave this field blank. However, the Prior Year PIN/Electronic Filing PIN field should be left blank.

You should be able to efile using this procedure, when you have not filed at all during the prior year.