Userscripts.org

I am a noob to all this but from your script name I was assuming it would add the functionality for me to go to my site of choice,right click a object and in the context menu it would give me information on a element.I am assuming example of a element would be like the "home" button on a website I am interested in creating my userscripts for which is faithfreaks.com (a faith based social network).I was hoping there was a easy way to figure out what that home buttons element name was then I could go on to the second stage of things which would be finding javascript to do various things to it,I am interested in hiding that button on the login screen.I am also interested in making a across the whole site radio stream player that would have a minimize button to make it unobtrusive ,the most I would want on the player would be a play button so you have to start it and a volume interface of some kind and then a stop button,preferably same button as the play one.