Originally Posted by Malchik
Second, is it possible to delete an ebook in the books section without deleting it in the collections?
Third, is it possible to create subcollections? like folders in a collection?
Second: No. Collections point to book in books section. You may delete a book in a collection but it's still in the books section. Other way round it's totally deleted.
Third: No. Just one level.
[Speaking of Sony Reader Library]