Oh, do you have any W2s for those years? You don't need to file if you only had W2 income less than the Standard Deduction. Did you get any 1099s for the odd jobs? If you didn't get W2s then did you keep records of your income? If you got 1099 income or cash you need to file if it's $400 or more on schedule C and pay the self employment tax. You need to do each year separately and mail them separately.
