If I am a Canadian Citizen and also a US Resident, what are the tax implications of selling products online; specifically on Amazon.

I've read stories of people who are US Citizens and send things to Canada with no ties to Canada. And the other way around. But now I'm a Canadian Citizen and USA Permanent Resident looking to sell on Amazon Canada. Also another question, should my bank be in Canadian dollars in Canada? or USD ? Do I even need a Canadian bank account, or should I just have the funds converted back to USD in an american bank? How should I report my earnings ?