No. Irish citizens do not require a visa in order to visit Canada for periods of less than six months. However, visits to Canada are at the sole discretion of Canadian Border Services Agency.
They can deny anyone entry. Three months is a long visit and almost certain to trigger concerns that you are attempting to work illegally, won't leave, or issues about you supporting yourself. Expect CBSA to want details on your trip, a return plane ticket, bank statements showing tens of thousands of dollars to pay for this, proof you are employed in Ireland (and an explanation of how you can take three months off work), proof you are maintaining a residency in Ireland, proof of travel medical insurance, etc. If CBSA isn't satisfied you will leave and are not attempting to work illegally, they can deny the visit, limit the length of your stay, or issue you a visitor record (which requires you to report to a CBSA office when you leave Canada).
Yes, you'll need a tourist visa. It'll usually be valid for up to 6 months.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.