First he should contact the university and find out what they suggest because not all textbooks are available on all devices. Leo likes the $79 Kindle, but he's almost certain there won't be a lot of the textbooks he needs on there.
Leo thinks the iPad would be the best way to go. That way he can access textbooks from several eBook stores including Amazon and Barnes & Noble, and the iBook store itself is very textbook centric. He was wondering if he should wait for the Microsoft Surface, but Leo advises just getting the iPad. It'll be cheaper too.