The following online tutorials will guide you in the use of APPsearch and the ASU Library Catalog
Google Books is an excellent tool for perusing the contents of millions of books. If the book is out of copyright, or the publisher has given permission, you'll be able to see a preview of the book, and in some cases the entire text. If it's in the public domain, you're free to download a PDF copy.
To get the full text of articles, try both the Find@Appstate link and the article title, or contact a librarian for assistance.
