How are these notes played on a tin whistle?

b - first finger on left hand
a - first two fingers on left hand
g - all three fingers on left hand

f - all left hand fingers and first finger on right hand
e - all left hand and first two fingers on right hand
d - all left hand and all three fingers on right hand

c - no fingers
high d - second two fingers on left hand and all fingers on right hand

*note left hand goes at the top of the whistle :)

That should be all for now, if your a beginner. There is a number of websites for beginners and music sites too! :)