I've posted this before, but if anyone's interested, here is my quick guide to how to pronounce Irish sounds

Labial sounds
Broad
b, p, m, f, w/bi-labial fricative -lip-round, especially before í
Slender
b', p', m', f', w'/bi-labial fricative -lip-purse(draw back and touch lips (no teeth). Y-glide before á (but not /ae/), ó and ú (beo, feoil, meon etc)
Coronal sounds
Broad
t, d, s, z, L, N, -take in water, but don't swallow and hold and don't spill (tongue fans out and dips to hold water while back of tongue is raised). L or N are the easiest to do this with
Slender
t', d', s', z', L', N', dh/gh -the tongue shape for 'y' in yes + the relevant sound
Alveolar sounds
Broad
l, n, r -English dark l as in 'ball', dark n in 'bawn'. For the r tap the tip of the tongue like in Spanish 'pero'. Conemara r is velarised too
Slender
l', n', r' -English light l as in 'pill', light n in 'pin'. For the r, practice with the sequence pill, pin, pir where the r is tapped but darted and 'dragged' a bit a 'j'
Palette-al and Velar sounds
Broad
k, g, ng -open one's mouth wide as if breathing into one's hand and breath out a 'h' continuously then interrupt by making the target sound
Fricatives
kh, gh - as above but for kh constrict the flow and for gh voice the prior (French R in a pinch)
Slender
k', g', ng' -'y' in yes + target or c in 'cue' or g in General American 'figure' and English 'sing'
Fricatives
kh', gh' -'h' in human for many people. If that doesn't work breath out continuously and constrict by making a 'y' sound till you get it. 'gh' is like 'y'
Throat sound
h