But how do I know what chainring to buy, besides the 110bcd and the teeth?
On these websites it tells you its for a 8, 9, 10 or 11 speed. I don't know what they mean by that and if it even matters to what I need.
That is what is confusing me, the way the websites.Components > Drivetrain, Brakes and Pedals > Chainrings | Jenson USA as an exmple, filter stuff.
Can i get a smaller chainring and then put my current small ring on the outside?

Im sorry if these are silly questions, sometimes I over complicate things for myself.