In the 35+ years that I’ve lived in Sydney, I’ve never been to Narrabeen. It’s pretty, and here’s the proof:
Shooting at the beach can play havoc with your camera’s exposure readings so, as usual, it’s best to shoot in manual if you can. It’s important to preserve the detail in both the sky and the foreground. Shooting at narrow apertures (at least 8) keeps everything in focus, which is what you want in most cases if you’re shooting landscapes.
Happy photographing, and remember: do what you love, as often as you possibly can.