History

1) Great Famine
2) Religion in Ireland
3) Irish War of Independence
4) Bloody Sunday
5) Conflict in Northern Ireland

Geography

1) Overall
2) Map of Ireland

Food and drinks

1) Colcannon
2) Irish Stew
3) Irish Beer

Language

1) Listen to an Irish accent (click on play); also here on Irish Radio.
2) Listen to Gaelic Radio (RTÉ Raidió na Gaeltachta)