Deborah Fox writes an interesting blog about Irish research (it also has an interesting title: "The Faerie Folk Hid My Ancestors").
Earlier this month Deborah wrote about her experiences in researching Irish Deeds. I personally don't have any Irish ancestors, but those of you who do may find this blog worth checking out. As with any personal research that I read about however; I found insights to research techniques applicable for any field.
In this particular post on Irish deeds, Deborah provides some links that may help you in your Irish research. Check out the blog at: http://irishfamilyresearch.blogspot.com/2010/03/read-that-deed.html