Congrats on your new tractor!
What kind of implements do you have (or are you going to get)?
Being your first tractor, be careful out there. Tractors and in particular, tractor implements are unforgiving.
If you got the loader (aka FEL), get used to how to control it smoothly and where your bucket level indicator is. That will make your loader one of your favorite implements.
What kind of terrain are you in? Unless flat, you'll want to get used to the tractor on hills. The center of gravity is kind of high on that tractor so you'll want to avoid going sideways across hills. Filling your rear tires with fluid helps to keep the COG lower and puts weight on the rear-end so when doing loader work, the back end of the tractor will stay on the ground. (My back tires are filled and I can still do things with the loader that will pick the back end up off the ground).