Something special

You can do it sitting down...There are different sorts of sand-yachting. With "Char à voile" (sail-carting) you are sitting down in something like a sail-driven go-kart, so you have a safely low centre of gravity.
Sand-yachts are good for beginners - it feels safer to be closer to the ground while you're getting started! Most people soon get the hang of controlling their sails by the simple pulley system.
...or standing upYou can also try "speed-sailing", which you do standing up - it's like sail-boarding on wheels.
You stand up on a small platform, leaning out to balance the sail - and generally go faster than a beginner's sand-yacht.
You can do it sitting down (called "char à voile")...or standing up (called "speed-sailing").
Getting startedSeveral centres offer lessons - for children and adults - and hire the equipment. Most take groups as well as individuals.