I am a newcomer to GIS, and am looking for local data sets to use with my students. I would like to locate data on our state, county, and city levels (for city, things like parcels, subdivisions, etc.). I am aware of some of the more global sets that would apply equally to localities around the world, but I'm looking for stuff that would be almost hyper-local.
I am in Oakland County, Michigan.
How can I find data sets that would be relevant to my students?