I recently happened upon the most magical piece of tech—a FREE browser extension that checks to see whether a book you are perusing online is available via your library as a hard copy or an Overdrive/3M ebook.
You simply install it on your browser & select your library (or libraries) from a list which includes the US, Australia, Canada, New Zealand, the UK & others. Anytime thereafter that you view a book (e.g., on Amazon, Goodreads, Barnes & Noble, etc.), the extension will show you whether you can borrow it for free! With a touch of a button, you can then snag the book from your library.
The extension currently works with Chrome & will soon be set-up to work with Firefox & then Safari as well.