Hi Arry and
Good on you for taking an interest in Astronomy. Its great fun!!
I got my first telescope when I was not much older than you. ( and that was a long time ago
) It was a little 60mm Tasco refractor and I thought it was the best present I had ever been given. Through it I cold see heaps of craters on the moon, Jupiter and its moons and belts and zones, Saturn, the orion nebula. You're pretty lucky your dad has such a big scope. You can see so much more than I ever could with my little scope.
Hope to hear more of what you're looking at. (Don't let Dad hog the scope too much. Make sure you get a go. Shhhh)