1. A reference index and teaching tool enabling the beginning user to efficiently locate information compiled and arranged in sections in a book such as a dictionary, each separate section of the book containing information grouped according to separate letters within the alphabet, said system comprising: a. guide means located on an exposed portion of said book for convenient reference, said guide means consisting of a list of the alphabetical sections contained within the book and a key numeral counterpart for each of the alphabetical sections, said key numerals being in seriatim arrangement and a distinct key numeral serving as a common identifier for each entire alphabetical section; and b. indicia means associated with each alphabetical section in the book, said indicia means identifying the key numeral counterpart of the alphabetical sections, each page within a section carrying the key numeral common identifier for that section, whereby a particular alphabetical section can be located by the beginning user first locating the appropriate key numeral for an alphabetical section on the guide means and then finding that key numeral on the indicia means to locate the desired alphabetical section.
2. The reference index system of claim 1 wherein said reference system is applied to a dictionary and wherein said indicia means are carried on the edge of the pages.