Anytime anyone has asked me about my Ebook Reader, I've always explained, it's like a iPod for books
You can read from the Reader or the PC, Lilac answered your question about the drag and drop. If you like to read, you are definitely going to LOVE it. Anytime anyone asks me what book I want for a present I tell them don't worry about it, I download them. Since Sony got into the Ereader game, I remember buying only 1 book that hadn't been released as an Ebook.
Welcome to a whole new way to read books......enjoy