You should try using Google. It's this incredible site where you just type in what you want, and it'll search the internet to find it for you.
Best part about using Google? You don't waste our time by asking us dumb questions.
I will give you one piece of advice, though. Canon makes a lot of printers. They make printers in all different lines. Just knowing that it's a 2900 doesn't tell you which line it's from.