If your missing out by not claiming everything, this website lists it all for you!
http://www.cra-arc.gc.ca/tx/bsnss/tp.../menu-eng.html

This is my first year, so I have no idea what we'll owe, but we're putting away a bit of money every month to save for tax time. Even if we only have $1-2000 in there by next year, every little bit helps!

Hopefully you can resubmit and not owe as much! Good luck!