If you own a tractor, best bet is your manual. If you don't own a tractor and just want to read what's involved, go to
the Deere Web Site and look under Products, then click on the Compact Tractors link. When that link opens, select any one of the tractor series and then a tractor (4310, for example). About the center of the screen, you'll see "Features". Below that, you'll see "Manual". Click on that, and you'll open the Owner's Manual for the tractor you selected. Just read through it or look in the index for maintenance.
If you're asking about generic maintenance...figure oil changes every 100 hours, other fluids about 200-300 hours (both including filters), grease the zerks every 10 hours. Torque the wheel bolts every 50 or so hours.
You can also peruse the "Owning/Operating" forums here and glean a lot of good practical information.
However, the manual for a specific machine is more detailed.