there is much confusion being generated here ..
You can use large Medium Small which varies the number of pixels you record.Large gives you the full 24 mp of the camera Medium about 12 and small about 6 mp
you can use fine normal or basic which is ever increasing levels of compression. 4 8 or 16 times reduction in size of whats stored.
Large fine and large basic are both 6000x4000 pixels
there is no point in useing less than large unless you are doing a shot for e bay or to send on the internet.
You should also consider the lens you are using ....a 10mm lens covers 4x the area of a 20 mm lens (or any doubliing of lens focal length) so the information is spread over less pixels the wider the lens you use ...
why buy a 24 mp camera and reduce it to a 6 mp one ? unless its for ebay.
I think it is also silly to say there is no reason to shoot in RAW, I shoot JPEG because I shoot hundreds of photos in an hour and the processing would take a silly time BUT I have friends to do portraits who could not produce the abstract shots they do if they did not shoot in RAW. If you edit in JPEG you have less edditing options than in RAW and you must be carefull not to compress the JPEG furthur when you save your edited photo or you will end up with poor quality.When you convert from RAW to JPEG you can choose your compression ratio to suit the desired use
In my opinion any moderator on any forum should seperate his moderation duties from his advice/ comments as advertising yourself as a moderator gives unjustified weight to the comments and bares no relation to the moderators experience bias or knowledge in the matter being discussed