Good luck! Don't worry though, you have a Glo so it's very obvious which firmware you need (the Glo version
), as apposed to some Touch's that use the Glo firmware for some reason.
If you're afraid of losing things you could backup your Glo's disk first (make a disk image). But there have been no problems whatsoever with people upgrading to 2.3.2, and if you prefer to go back to 2.3.1 after that, or even back to 2.1.5 (more stable) you don't need to do a factory reset (which is suggested in one of the posts in the direct links thread).
You can do it! Waves of moral support flying your way