Search for library e-books using the Search Anything box on the main page. Go to the library's home page at http://library.liberty.edu. Select "Books" from the dropdown menu and select the "E-books" radio button, and when you view the results page, click "Full Text Online" at top left. This search ("Summon") offers links for related topics and the ability to narrow down your results by several different factors. However, you have to filter it to exclude many less-relevant results; if you don't require "Full Text Online", you'll see many print books with online reviews, for example.
We constantly obtain more ebooks through the Ebook Central database: there are so many that "Summon" doesn't always have all of them yet. For that reason, you may find it useful to use that service's search service as well. Please visit the Ebook Central search page, supply your ordinary login credentials (if you are off campus), and use the search feature at the top left corner of the page.