To recognize the anniversary of the Rebellion, I am reading Charles Townshend's Easter 1916: The Irish Rebellion. I bought this book back in 2007, yet I never got around to reading it until the anniversary approached.
There is also W.B. Yeats poem "Easter 1916". The poem shows both the emotional turmoil of the feelings of the Irish towards both the British and the rebels.
Music also invokes the event, most notably in the Irish rock band The Cranberries' song "Zombie".