IoT Multimedia Using HTML5 code

You should use your browser to save-as/download these files to your own computer and then edit your own copy of the files to change them any way you like. To view/play, simply open your own copy of the files in your own browser on your own machine (no server required).

The links in the 'ADVANCED HTML5 CODING STUFF' will help you learn how to control things via the web (The Internet Of Things)

There is lots more help and lots of simple examples on-line here