Of all the things you have to study,glycolysis is one of those things you kind of just have to memorize(if you havent already done so in a biochem class).Just google it and go through the steps--theres a few important pieces like some of the names of the enzymes, and the irreversible steps, etc that you should know too.
I found a good diagram for you that shows the deltaG values and the enzymes and pathways and things too.