Howdy,
I'd generally ignore the partisan crap you find on these forums and seemingly everywhere on the political front these days. My advice would be to start at the basics: understand the differences between right wing and left wing governments, and choose what you'd prefer. Generally, left wing governments are more socially progressive (supporting gay marriage, abortion, etc.) and believe in higher taxes which can be used to redistribute the wealth through social programs such as public health care, education, and child care. Generally, right wing governments are more socially conservative (don't support gay marriage, abortion, etc.) and believe in lower taxes so that more money is left in the individual's pocket. Conservative is right wing, NDP left wing, Liberal somewhere in between, and the Green party doesn't really fit on the traditional political spectrum.
This is heavily simplified, but it may be a good place to start. You then have to consider what issues are more important to you, and what each party offers in regards to these issues.