Troy wrote: Personally i shoot in Raw+JPEG, so leave the white balance on Auto. If you're in JPEG i'd just leave the white balance on auto too, it should do a good job of realising you're outside on a cloudy day. Alternatively you can put it on the cloudy setting.
Got a little note to that one!
If your planning on doing panorama photos, or simply just more than one photo which has to be stiched together afterwards, be carefull with setting the white balance to auto. If you're on auto and you don't hold down the trigger button halfway and just move the camera, you will be slightly different results on each photo - which will screw up the end result when stiching them
So go with the "I-press-the-trigger-button-halfway-down-and-focus-on-the-first-frame"-trick :p
Otherwise I have nothing to add. Good luck out there!