Since nobody has mentioned it, my favorite method is listening to songs and learning the lyrics. It's the same suggestion made in the article of memorizing enti

Since nobody has mentioned it, my favorite method is listening to songs and learning the lyrics. It's the same suggestion made in the article of memorizing entire phrases of the language, only with song lyrics it's made easier by the cues given by rhyme and metric. And if you like the songs, it's a pleasure, and repetition (i.e. singing by yourself) is easy. And a memorized text works as a reference for both lexicon and grammar.