You can borrow print books from Colorado public libraries through Prospector. Unfortunately, eBooks cannot be borrowed through Prospector. You will have to have a library card from the public library to use their eBooks, but it is easy to get a library card. Public libraries often have large eBook collections, especially of popular books. You can access the eBook collections of several metro area public library districts below.
Though Auraria Library has access to thousands of online and print materials, no library has everything. However, it's likely you can get access to an item through other sources!