How to create your own video chat app in under 10 mins

thanks for taking the time and energy to put this up!! WebRTC is amazing! i have followed this exactly…but I get a blank page when I upload it to my server subdomain where I would like to have the chat. So far none of these tutorials explain WHERE to put these few lines of “code”. WHERE should I put them (i.e. the .html file, .css and .js.)? do I need four different .js files or just all of the “code” into one .js file…which what I did by the way. Where does everything actually go? Any insight would be greatly appreciated!!