G'day Mate and welcome to TBN from Downunder.
She'll be right, mate. Firstly, the procedure should be described in your Owner Manual... including the filters, oil(s) and amount of oil(s) required.
Secondly, mentally think the procedure(s) through before-hand. What tools will you need? What are you emptying the oil(s) into? I'd recommend buying a couple of inexpensive plastic storage bins (you may know them as 'totes' if you're from N.A.) that can easily be slid under the tractor to collect the fluids.
Ensure that the tractor is parked (hand brake ON and in Neutral) on a level surface. Run it for a while (1/2 hr.) to warm up the oils for a good outflow.
Initial removal of 'factory installed' filters can be difficult as all manufacturers employ an 800lb gorilla to put them on. :laughing:
If you're replacing the oil and fuel filter, remember to rub a wee bit of oil/fuel on the gasket, prior to installing, to 'set/seat' the filter properly. The fuel filter should also be filled with diesel prior to screwing it on.
Have fun and have some rags handy for any clean-up.
Enjoy the site... from wherever in the world you're from.