What financial advice would you give to a young boy, probably, at the age of 18 who just received a whole lots of money from the inheritance of his late father who was a trader and multimillionaire in the textile industry?

The boy is the only child of the widower and does not seem to be interested in the same line of business and even when he does, he requires more maturity to be able to manage the business such as graduating from the college, etc.