Many local public libraries subscribe to ebook collections through the online services Overdrive and Freading. These services will give you access to many popular titles and will allow you to download ebooks to your computer and portable devices.
In most cases, you'll need to obtain a library card at the public library in order to access the collections online.
Book Search - Search by author, title, or subject as well as most popular and latest release
Catalog - Advanced search, Top 100 Books, and searching by specific languages
Bookshelves - Books are broken down by categories such as children, crime, history, law, music, etc.
There's an app for that!
Some devices need an app to read a specific format, or you could use the reader applications below to read e-books on your computer.
Find the apps on the sites below.