Usually if someone wants to see your scene file they'll ask for an .ma format instead of the default .mb as that can't be salvaged if its not compatible with the Maya version they're running.

As for t Graph Editor, the numbers at the bottom display frames and the numbers on the left side are used to measure the current the value of whatever attribute the curve represents. The black dots on the curves are keyframes and the curve itself shows you how the attribute's value changes as the frames roll along. Right now, instead of gradually changing from one value to another, its happening abruptly because the interpolation being used is `stepped keys` as Stwert mentioned.