Don't do everything at once. It takes time and planning. PowerPoint files are easy to convert to web pages and can be turned into illustrated audio, i.e., narrated slide shows on the web. There are also CD-ROMs, videos, computer simulations, and other multimedia materials available from the libraries for use in classrooms and computer labs. Don't forget the tried and true technologies.
Print is a fine technology.
So are phones. Audio and video tapes have been used for decades. Email and the web are commonplace and easy to use. It keeps getting easier and more reliable to add video, audio, animation, and interactivity to the web. You don't have to be a techie to get in the game.