How difficult is usenet to actually use?
If you can figure out how to torrent, you can figure out Usenet. Actually in a lot of ways Usenet is easier. First download SABnzbd, think of this as your BitTorrent client except that it's managed entirely within your internet browser. It's the program that decodes the data in .nzb files, figures out what binaries it needs to download and gets them, and then compiles them before unpacking. Think of .nzb files as the equivalent to .torrent files in BitTorrent. You're also going to need to sign up with a Usenet provider, you might as well take advantage of the offer advertised on the SABnzbd website for Newshosting. I use Newshosting and it's one of maybe three providers actually worth signing up for, the others are Easynews and Giganews. But honestly Newshosting is the one to go with.
Okay so now that you've got a binary downloader and you're signed up with a Usenet service, what about actually finding "filez"? For this you'll need an indexer, there are free indexers out there like NZBKing, but they're sort of meh. A subscription to one of the good ones, however, is absurdly cheap. NZBGeek charges $6USD for six months access or $12USD for a year, $80 nets you lifetime access. NZBFinder is more expensive and tiers their service, locking some 4K UHD and porn behind higher tiers. Honestly NZBGeek is the one to go with, there's not much I haven't been able to find on there, and the things I haven't been able to find is like extremely obscure stuff, we're talking early minor works in Rainer Werner Fassbinder's filmography that I'm not wholly certain even received a DVD release, that kind of thing. But who knows, maybe the porn selection on NZBFinder is better, I have no idea.
Once you're signed up with a provider and an indexer, plug in the required info into the SABnzbd settings page, set SABnzbd to watch a folder, search your indexer for whatever it is you're looking for, download the .nzb file into that watched folder and you're good. SABnzbd will read that .nzb and start downloading files.
There is one downside to Usenet, and it's that multi-file downloads aren't as much a thing. Oftentimes you won't be able download an entire season of TV in one go, you'll have to download each episode individually, although occasionally season repacks are uploaded. NZBGeek makes it easy to set up batch queues however, and you can play with the options in SABnzbd to schedule the downloading of those batches. There are also options to automatically rename and sort files into folders once they're downloaded, which is practically a necessity when downloading an entire TV series (unless you enjoy manually moving files across dozens of folders). Thankfully it's easy to configure it so that TV episodes are sorted to resemble something like "Series Name"/"Season XX"/"Episode XX - Episode Name". Even with that extra bit of work you have to put in downloading all the episodes of a TV series individually on Usenet it will probably still be faster than Torrenting (depending of course on how well a .torrent is seeded). Usenet files will always download at the fastest possible speed, so your speeds are only ever bottlenecked by your internet connection and provider speeds. With my internet connection I'm always hitting 9.5 MB/s with whatever it is I'm downloading, meaning a 5GB film is finished downloading in around seven minutes. (We've come so far. I remember downloading the trailer for Star Wars: Episode 1 with my dad over 56k dial-up. It took an entire afternoon and in that time my mom's car broke down while she was out and she couldn't get a hold of the house.)
And it's not like I don't still use BitTorrent, I'm seeding 1322 torrents on a private tracker at this very moment. I generally turn to Usenet for films and new episodes of TV, and it's a mix of BitTorrent and Usenet if I'm downloading an entire TV season or series. When it comes to music piracy I'm on a private BitTorrent tracker and I use SoulSeek too. I don't pirate much software but that's generally done on BitTorrent, and as for eBooks, well there's no better option than Library Genesis. It's always good to have a mix of options to cover your bases.