This little volume works well as a brief introduction to the history of Ireland up to approximately 2005 and is ideal for anyone wanting a primer before a first visit. As a result of the pocket-guide style, the images are small and the details thin in places, i.e. more space could be devoted to larger events, though, again, the format, a two-page spread per topic, necessitates brevity.
For anyone wanting a detailed modern history of Ireland, Fintan O'Toole's "We Don't Know Ourselves" would be a great next read after this introductory volume.