I dropped Spanish which was the only language offered during my high school years. I regret it, and now I’m embarrassed to start learning as a uni-aged guy. I want to learn Mandarin because then I would know English and Mandarin which would cover like 50% of the populations speaking abilities.
Basically I just feel like a dumb American and being a Marxist I need to know another language.
Everything is supplementary, there isn’t the one tool that will teach you, but it doesn’t matter, Duolingo makes it easier to start and you will learn stuff, the things it doesnt teach you, you can ask them elsewhere, immerse yourself in the language and so on.
LanguageTransfer is a really cool podcast so that also helps, i havent used many other platforms for indoeuropean languages.