Congratulations!
A brand new car is very simple to maintain. I would you start with following 3 steps:
- Chemical decontamination (Iron X)
- Mechanical decontamination (Clay bar, nano scrub bar etc)
- Sealant (Menzerna Power Lock Plus) (optional)
- Wax (Collinite 845)
Step 3 is optional, but provides longer lasting protection.
Going forward, you can top up wax as and when required, say 3-6 months.