Love, Gramma was written for teen and young adult grandchildren, thinking of the challenges they would face on their journey into adulthood. This book is full of frank advice, examples of lessons they might learn, and suggestions on how to navigate the sometimes bumpy roads aheads. There are chapters on living alone for the first time. Chapters on how to take care of their own place and finances to easy recipes, perfect for those college students leaving home for the first time. For the teens in high school, chapters about being safe on the web, dating, school, and how to communicate with parents respectfully.
Take a peek at https://www.amazon.com/Love-Gramma-Grandmothers-Finding-Yourself-ebook/dp/B0918TXSSR/ and see if this book is something your young person would find helpful as the new school year starts.