Actually the Lotto money is taxed but before it enters the pool. As a result of this our Lotto prizes tend to be smaller than they are in the United States. The largest Lotto win ever has been $30 million (twice). However if you win $30 million you get the full $30 million.
No First I'd pay off all my debts, then I'd pay off all my parents and siblings debts, then i'd help my parents settle into whatever they want, then I'd settle into something, then I'd buy stuff like cars, and things and fun stuff for everyone.