sink garbage disposal clogged

The garbage disposal won't even turn on anymore. We stuck our hands in there and pulled out broken glass (grrrr at whoever put broken glass in my sink and let it go down the drain!). I really can't afford a plumber and needless to say, I have no idea what to do and where to start. Doing the dishes is an inevitable and unexciting chore, but a sink that refuses to drain is enough to make you want to sprint for greener (and less clogged) pastures. If your first thought is to call in a professional to deal with the