Dennis Hogan is a professional genealogist based in upstate New York and he has given lectures and talk about all sorts of Irish genealogy topics for the last ten years. On his website you can find a considerable treasure trove of handouts from his public appearances.
Topics specific to doing genealogy in Ireland are covered such as Griffith's Valuation, Irish surnames, and obtaining dual citizenship. In particular, his handout 'Searching U.S. Records for Your Irish Ancestors' will be of interest to readers of this blog.
You can access all these handouts on his website, here.