Should I file? Will I get refund?

Since you have such a low income I would suggest you use the 1040 EZ form. Use this site - Taxsoftware.com - It's free unless you print the form. The truth - Most likely you'll owe. The GOVT screws the LOW income earners! You'll get $$ back when you have deductibles, like mortgage points, House tax, capital gains, losses .. good Luck!