Help with 2011 Personal Tax Credits Return?

I am a 20 year old individual who have two part-time jobs and my recent employer gave me a 2011 personal tax credit return form and a 2011 provincial tax credit return to be filled out. I am in a dilemma because I don't know what to put in line 13 (total line). I had filled out one before but when I was employed by a placement agency (whereas nothing sort of happened to me since I got a job before they can even find me one...) I had somebody as a guide and she just carried the amount from line 1 to line 13. I am currently receiving GST/HST credit annually and am receiving income tax return quarterly; what amount should I put on line 13 given my situation? Should I put 0 or carry down the amount from line 1