• Pimsleur language learning ( learn at instinct-level, not the prompted-stuff or memorizations that many other language trainings work at )
• Tandem app ( probably not great for privacy, been awhile since I tried it ), you help someone learn your language, & they help you learn the target language one you want
• simplified short-stories, books of collections of the things..
• TV in the target-language
• songs because they wire-up your other-hemisphere ( right-hemisphere for the 85% of people who have language in the left ) with the language, & that reinforces the language's patterning
• flashcards for the stuff that actually requires you to remember specific arbitrary things, like difficult words, or whatever, for random moments throughout the day

Some of this I got from a book by a guy who knew .. 29 or something? .. languages & worked for the CIA.

Other stuff ( songs ) from science news, & my discovering that language-destroyed-by-stroke people could sometimes still communicate through picking a song which had the idea they were trying to communicate..

I have a bad time learning anything through hearing, though, so .. language-learning seems itself to be kinda broken ( I learned English before anything, & it was my 2nd wave of braindamage which took much learning from my life, not the autism 1st-wave ).

These are the best tools I know-of.

I wish I could learn languages.

I wish everybody learned other-languages, to understand just how diverse humankind's meanings can be..

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