Assimil Review (2 Big Issues I Had)
Anki (free flashcard application): https://apps.ankiweb.net/
My Anki decks: https://ankicoredecks.com/
Innovative Language websites (more complete alternative to Assimil):
JapanesePod101: https://www.japanesepod101.com/member...
SpanishPod101: https://www.spanishpod101.com/member/...
FrenchPod101: https://www.frenchpod101.com/member/g...
ChineseClass101: https://www.chineseclass101.com/membe...
RussianPod101: https://www.russianpod101.com/member/...
ItalianPod101: https://www.italianpod101.com/member/...