This could be mechanical things like the order of adjectives, or more complex/personal things on your journey of learning another language.
I want to start learning Norwegian again and I remembered learning a lot about citrus fruits as I went on Wikipedia adjacent trips.
I like how Chinese has a pronoun for we/us including the person you’re speaking to (咱们 zanmen/zamen) in addition to the plural pronoun 我们 women that could be either.