GA flying to Canada

[flyhighdude]

Hi guys,

I will be building up my flight time in the Seattle area this June, and I am thinking of flying across the border to Vancouver, Canada from Seattle.

Does anyone know how I can clear Customs on both sides of the border? Do I need to file a flight plan back and forth? Who do I file the flight plans with? Any other things I should be prepared for, be aware of, and etc.?

If you have done it before, please kindly educate me on how it will work.

Appreciate all your info.

Thanks