Congratulations on you getting a zed.
You've already done the best thing a zed owner can do in finding the OC
Just remember the basics.
Run on premium unleaded 98/99
If you have to use 95ron don't rev it hard past say 4.5k or risk detonation. Then use 98/99 asap after.
Keep an eye on oil levels as with any car.
Mixing different tyres front and back may make the handling less predictable.
Now it's winter, be careful when using your boot.
The gas struts are often weak and the tailgate may drop like a guillotine while you are loading/unloading the boot