Informational Websites

This website! https://equwal.com
xm0.co mirror of the AJATT website (down) https://xm0.co
Steven Krashen's website http://www.sdkrashen.com/
view the AJATT website on the web archive (recommend going for ~2014) https://web.archive.org/web/20140210051447/http://www.alljapaneseallthetime.com/blog/
"DJT" websites like this one (Japanese) https://djtguide.neocities.org/

YOUTUBE CHANNELS

Steve Kaufmann https://www.youtube.com/@Thelinguist
Matt vs Japan https://www.youtube.com/@mattvsjapan
Korekara podcast https://www.youtube.com/@KoreKaraPodcast
Professor Arguilles https://www.youtube.com/@ProfASAr

BOOKS

Breaking Tradition (history of language learning in medieval times)
"From the Outside In" J Marvin Brown's autobiography https://bradonomics.com/brown-autobiography/
Kato Lomb's book "Polyglot: How I Learn Languages"