You can use either zillow.com or this website for Monroe County that will tell you all the info you want to know about a house. You can even see the actual tax bills:
propertyapp
As far as home taxes go, we have property tax and school tax. If you look at a home on Zillow, it will show you the combined taxes. They're paid in different times of the year, however they're typically escrow'd in to your mortgage unless you opt not to, and the bank takes care of the payments. Otherwise, you don't escrow them and you pay when you get your bill from the town you live in.
And as far as the actual rate goes, 2500 seems around right for 100k if not a touch on the low side. But it all depends where the house is located and how big the plot of land is. Zillow will give you all that info quite easily though.