"Y" and "e" mean the same.
But you use "e" when the next word starts with "i", because if you don't, it would sound awful!
Acabaré el dibujo e iré al supermercado.
I will finish the drawing and I will go to the supermarket.
Jorge e Irene son amigos.
Jorge and Irene are friends.
If we said: Jorge y Irene son amigos, that wouldn't sound well, don't you think? Those two "i" sounds together.