The product is no longer maintained by Autodesk.
The juice is rarely worth the squeeze.
Despite its end-of-life status, the search term has exploded in popularity. Users are desperate to get their hands on the final version of this software. But before you click that mysterious link, you need to understand what you are looking for, why it is on Google Drive, and the hidden costs of "free" software.
: Standard installation involves running the executable and agreeing to the terms. Note that the 2018 interface is updated compared to older versions (like 2015) to be more user-friendly.