Well said, a Iosfhairíne dhílis.whiskEy might be a better choice
Here's a rough guide that I found on the Mudcat, posted by one Bill Kennedy, with a few edits by myself. I would take issue with some of his other suggestions, but don't want to over-complicate things.
BASIC pronunciation, discounting regional dialects, and not getting into the broad and slender characteristics are:
a - between short a and short o
á - as aw in maw
e - as e in bet
é - as ay in say
i - as i in bit
í - as ee in feel
o - as u in up
ó - as o in go
u - as u in up
ú - as oo in boot
b - as in boy
c - as in cat, ALWAYS a hard c, never like an s
d - voiced American-style th as in they
f - as in fit
g - as in good
h - as in hat
l - as in luck
m - as in Mary
n - as in nut
p - as in Paul
r - as in rat
s - as in sam (when before or after a, o or u) or sh as in shim (beside i or e)
t - as in american thing
dots over certain consonants cause lenition (commonly misnamed "aspiration", which is what it's called in Irish - séimhiú)
bh - as v or w as in will or vwill
ch - as in German ach, a gutteral sound, as in chutzpah
dh - as in y in yell or silent, Gaelic was spelled Gaedhelic once
fh - silent
gh - as y
mh - v or w
ph - as f
sh - as h
th - as h, silent if at the end of a word
another consonant change at the start of words (as in welsh) is called eclipsis, always pronounce the first letter in the combination
mb - as m
gc - as g
nd - as n
bhf - as v
bp - as b
dt - as d