ISO 100, always if possible.
I have white balance as sunny, it's usually what we have here
Some like custom 6000k, haven't tried it.
If you don't want to do post, just forget the RAW / jpeg option, and set for jpeg only.
Other than that I leave most things on auto, no filter, compose for light (keep sun behind unless you want those sunbeam highlights), and don't forget to tap the screen for focus.
You can play around with different photo settings, like HDR / AEB, etc.
If shooting water and you want to 'see through' it, you can get and play with a C-PL (clear polariser) filter, but needs to be set up properly for direction.
Other things like aspect is personal, 4:3 gives more image, can be cropped (a simple editing, which is good for many pics, along with horizon straighten etc). Or for more screen ready size try 16:9.
There are a lot of other things you can play with for exposure etc, the histogram, overexposure warning, and peak focus threshold is very useful to ensure you're focussed right on your subject.
Google or YouTube search any of the above and you will find loads of good tutorials.