Full graphics is high end stuff. Normal windows with buttons and labels and other widgets is midrange. Displaying results in text is very easy.

Actually determining the results can vary from trivial to thesis material, depending on what it is you're trying to do.

One important bit that they left out is that you *do* have to understand what you are trying to accomplish, at a fundamental level ... no handwaving allowed, because the computer doesn't think.

So... the main question that remains unanswered: what is it that you are really trying to accomplish?