you don't get Social Security or SSI benefits?
yes
in that case tell the Social Security representative when you apply for the benefits you want to enroll in Direct Deposit.
What if you already have an account?
Take your checkbook or a copy of your bank statement with you
Another question about original documents concerns me. Is this to verify my current academic status?
yes this  Identifies you and confirms your current school status
How can I be authorized to work in the United States?
you can apply for an Individual Taxpayer Identification Number from the Internal Revenue Service IRS .
What if I am a foreign worker?