If your looking for a nice song in Irish /Gaelige then Oro Se Do Bheatha Bhaile Tin Whistle Music is a good one to learn. It's the very same as The Drunken Sailor and suitable for children of all ages.
I have given the simple letter notes to get you started along with a youtube video showing how to play each note. At least
when you have mastered it you can boast that you know play the whistle in Irish even if you can't speak it. Michael Row Your Boat Ashore is another song that's very popular with kids, well it used to be anyway, again it's easy to play along
with the video and I have given the letter notation. There's a raft of songs on the site for complete novices to play before
moving on to what's generally called ''intermediate'' . After you have learned the basic songs off, why not try a more advanced
one like Dirty Old Town, this is where you'd be advised to only learn one line at a time. Most folk music has only four lines
in a song and sometimes the chorus might have a different melody but in general it's 4 lines. Learn the first line until
you have mastered it, then the second line. Put the first 2 lines together and then practise them until your confident playing
them together, then do the same with the next 2 lines, then put the whole song together. Remember to keep practising and never
give up. When The Saints Go Marching In is also another of the easy one's, again I use the key of D on it, you can usually tell if it's in the key of D when
the F note is sharp. When reading sheet music and you see two of these # # you'll know it's the key of D and when you see
just one sharp # it's in the key of G. When you don't see any sharps then it's in the key of C Major. But most songs can be
played and key on the whistle depending where you place your fingers. When you are ready to move on from the kids section
there's a whole lot more songs which are slightly more difficult in the Learning The Tin Whistle section. some you may find a little easier.