Two websites that I have found helpful so far in reading the registers are:
Irish Genealogy Tool Kit Website, Latin in Irish Catholic Parish Registers - http://www.irish-genealogy-toolkit.com/latin-irish-parish-registers.html
This page has terms you are likely to come across when reading the birth, marriage & death registers.
From-Ireland.net: Begin tracing your Irish ancestry, Latin names in English
This website has a list of Irish names written in Latin, to help you decipher the names you will come across. Beneath this list there is also an explanation of the rules of Latin, e.g. :James son of James should read: Jacobus filius Jacobi"; male names that end in o add 'nis, Hugonis.
In saying this though, I couldn't actually find a death entry for my parish, so I don't know how helpful those tips are yet.
Also, Irish Catholic Church Registers: Bog Latin & Other Demons by James R Reilly at http://www.deliapublications.com/BogLatin.htm had a Sampler of Latin terms, given names & abbreviations found in Sacramental Registers was helpful.