Water is the simplest thing you can drink, and is the best for you. All other drinks are just water with something else added to them. Your body is made up of more than half water, so if you don't drink enough you will dry out and become dehydrated.
Wine is made by fermenting the juice of grapes. Fermentation makes a drink alcoholic. Alcohol is a substance that can make you feel very good and happy if you drink a little bit of it, but you get drunk if you drink too much. Wine is a drink that is only for adults.