An improved pocket-sized book capable of one-handed manipulation. The book has informational pages among which a user may navigate by using only the hand holding the book. The book has finger slots for receiving the fingers of a user and a thumb restraint for securing the thumb and thumb mass to prevent both from interfering with either the turning of the pages or the user's view of the information printed thereon. By placing his or her finger on one of the tabs and providing an upward rotational force on the book, a user is able to open the book to the desired section and view the information printed on the pages therein. A guard attached to the side of the book blocks the lateral movement of the pages so that the pages do not become askew.