Today, digital technology allows people to combine all the different forms of media in any way they want. There's nothing stopping someone from making an interactive comic, or a book with music, or any other strange combination. But as far as I know there is no guide to the creators out there that explains the benefits and drawbacks to using different kinds of media.
That is what I would like to do - make an educational computer program that explains the different basic elements of media and tells people what the pros and cons to each element is. That way creators out there can make an informed decision on what kinds of media to use.