You need: 1. Usenet provider (this allows you to download the links) and Usenet indexer (this allows you to search for content you want because files like movies usually have obfuscated filenames). Example of the former is Frugal Usenet, example of the latter is Drunken Slug (free-ish) or DogNZB (paid). One of the many things you need to watch out for with providers is retention, the length of time they keep the files so you can download them. In general, the older content you find on the indexer, the less likely it's still going to be available. The downloading itself can be done in an automated way (for example with Sonarr and the like) or kind-of manual with tools like SABnzbd.
