One of the first songs I learnt was Somewhere Over the Rainbow, and it is still my go to song when applying new techniques.
As to learning from tabs I tend to shy away from this as it can slow your development. If you learn a song by ear, it takes longer at first, but since you have to concentrate a lot more, thus you learn a lot better. Learning from tabs seems quick at first, but you can quite often forget the tune as quickly as you learnt it.
HOWEVER, I have a background in music so started with a fairly ok trained ear.
But if you have dyslexia you may need to think along these lines for later, so that trouble reading tabs doesn't stop your enjoyment.