Ebooks can easily be found in the catalog by search for the title or author, then narrowing your search to only ebooks:
If you don't know a specific book, but you'd like to find out what ebooks are available for a topic, you can use keywords:
You may also browse ebook collections in individual databases. Most of the databases allow you to browse through all titles, while some do require you to search for a keyword, author, or title. Keep in mind that in some databases, UNC will not have full-text access to all ebooks listed.
Start at https://guides.lib.unc.edu/az.php, then choose the database you'd like to browse.
This page also lists any important things you need to know about individual databases. For instance, if there are a limited number of users allowed at one time, or if you need to register with the database before accessing an ebook.