The Library has a growing collection of e-books on many topics. Ebrary is one source to access e-books. One can search by title or author. One can also click on the category "Business & Economics" which will generate a list of books. Additional subject headings are provided to enable one to focus the search to specific areas.
The Library has e-reference books (dictionaries, encyclopedias and handbooks) that can provide basic definitions or an overview on a research topic.
Try the Gale Virtual Reference Library.
It allows one to search all the content in the Gale collection. One can also click on the BUSINESS category to see what books are included in the search and limit the search to a particular book.
Try Oxford Reference Online for definitions of terms.
Through Oxford, utilized specialized dictionaries such as:
A Dictionary of Business and Management
A Dictionary of Business Research Methods
A Dictionary of Finance and Banking
Handbook of U. S. Labor Statistics by 
North American Industry Classification System 2012 by