Best advice I can give is to encourage them to get their parents involved. That takes training, right?
Parental involvement will help them deal with the difficulties of their freshmen year by keeping them focused on the task at hand. They can tunnel their wisdom through their kids, thereby teaching them how to become upperclassmen at an accelerated pace. They can be there to keep an eye on them, just to make sure they do the job right, and that they behave - or else. Besides, the freshmen won't need to be bumming rides that way.
