Books:
@pantopialibrary
libgen.rs
sci-hub.se for papers (you can also directly ask the authors. They may provide them to you for free)
calibre-ebook.com, free ebook reader
it-ebooks.info, programming languages ebooks
audiobookbay.nl, audiobooks
booksonic.org, audiobook streaming
mangadex.org, manga
Computer software:
Get Into PC (https://getintopc.com/)
Games:
vimm.net, NES era->ps3 era roms and emulators. Cons: slow download speeds.
nxbrew.com and nsw2u.org for switch roms
hshop.erista.me, 3DS roms
oldgamesdownload.com Old 90’s-2000’s PC games and some gamecube games. Technically, all of the games here are abandon ware, meaning the original company/creator doesn’t sell nor make money from the games anymore
fitgirl-repacks.site Heavily compressed PC games, and other various consoles. Small downloads and faster speeds for the size of the games. Somewhat limited game selection
steamunlocked.net, Steam games with easy-to-use installers
cs.rin.ru/forum/index.php A user forum for piracy support, usually about installing cracked games. Does have some scattered PC game downloads
amiibo.life Amiibo bins, can be loaded with some homebrew to load in games without any external source, or, if you buy writable NFC cards, you can make your own free amiibos
TV:
aniwatcher.com, animedao.to, twist.moe for anime
yesmovies.ag/yes.html, ww3.watchmovie.movie, movies
kimcartoon.li, cartoons
ustvgo.tv/ Free streaming of live tv, has most US cable tv channels
hyperbeam.com, Spiritual successor to Rabbit, allows you to stream your screen with friends
Recipes (not technically free, but cheap recipe websites)
Jack Monroe – Cooking on a Bootstrap (https://cookingonabootstrap.com/)
Budget Bytes (https://www.budgetbytes.com/)
MyFridgeFood (http://myfridgefood.com/) (finds recipes based on what you have in your fridge)
Cookbook Good and Cheap (https://cookbooks.leannebrown.com/good-and-cheap.pdf) (free cookbook)
Youtube ad-free:
NewPipe (https://f-droid.org/en/packages/org.schabi.newpipe/)
Free Android APKs:
BestForAndroid (https://bestforandroid.com/apk/)
GitHub Masterpost (https://github.com/Igglybuff/awesome-piracy): links to more torrent sites, software, VPNs, uBlock origin filters, ect. Basically everything you could ever want starting out.
Other:
thepiratebay.org
1337x.to/home, Torrent site for movies, shows, games, comics, ect
the-eye.eu/public, An archive of old roms, OS systems, roms (non nintendo), comics, books, ect, ect. Cons: No search function and slightly hard to navigate
Credits: I added some of the links myself, but many come from Tumblr posts I’ve seen in the past.
Also, remember to use an adblock and similar software before using streaming websites.