Tell him to take advantage of the opportunity he's been given. Be ready, booze and girls are fun, but not worth jeopardizing his future (as someone who lost a full academic scholarship, it's tough to claw your way back). Tell him to be himself. He'll find people that accept him for exactly who he is. He'll also find people who challenge him, they're just as important. Tell him to live in the dorms for at least two years. Off campus is fun, but he'll always remember dorm life. Tell him to call you every few weeks. He'll be excited to tell you about everything. Be excited to hear it. Tell him you're proud of him. Tell him you love him. He knows, but it's always good to hear. Lastly, tell him that if it smells like perfume, there's probably a reason.