It's fine, we're all nice people here and don't mind helping. 3nodding
I'm not sure what you mean by 'better' rings, but you'll find rings on occasion when you defeat the animated. Some of the rings may be repeats of what you already have in your invo., others might be completely new rings you haven't had before. To get rings with a higher CL, move to an area with animated with a higher CL. ( Depending on where you are with quests, certain quests will also reward your choice of ring when you complete them. )
You use the orbs to upgrade your rings. Go to the null chamber, select the ring that you would like to upgrade, and there will be a little pop-up on the right side of which you'll get the option to upgrade. It will tell you how many orbs are needed per upgrade and will gray out if you don't have enough orbs to upgrade the ring.