If you are someone who has always payed someone to do your taxes, and you have relatively simple taxes (personal taxes, no business etc.) then you should consider trying out one of the tax software programs.
The site http://www.ufile.ca will allow you to try it out for free, and then it will charge you if you decide to netfile it. This will give you a great idea as to if this is right for you.
It is pretty straight forward so do not be afraid, give it a try, after all, you can't lose, it only costs money when you netfile it. I think the netfile fee is only 15$ or something!