So I’m struggling a bit with two things as a beginner, and so I’m just looking for some advice for people who have mastered it. The first is the informal past tense for u-verbs and how to remember which way it conjugates. I know there are groups (like む、ぬ、ぶ conjugate to んだ), but is there some way to actually remember aside from just straight memorization grinding? I ask because I constantly find myself having to flip back to look at a list whenever I am conjugating those verbs into the informal past tense. I don’t struggle with ru-verbs or the irregular verbs for this, as they are more straight forward. So any advice to help with this would be appreciated.
Second, I am looking for advice about building up vocabulary. The vocabulary that is kanji based I’ve been doing with WaniKani is all solid, but any of the vocabulary I’m getting from the textbook is fairly iffy. When asked to translate a sentence in an exercise, I’ll often have to look up words often, mainly nouns that I don’t know from WaniKani. I’ve been trying to use Anki with the vocabulary from the textbook, but it seems to be hit-or-miss with words sticking (some have been in there for months and I’ll remember them one day but forget them when they pop back up 3-4 days later). So any advice on vocabulary building would also be appreciated.