Yeah, the best thing to do after the essentials is to just hit your head against Japanese texts repeatedly. Eventually the most common words stick and you get used to how Japanese sentences are configured. You won’t understand nuance or a lot of the words, but you will get closer to that point than if you don’t at all.
Trust me, I’ve made plenty of mistakes, some of which were pretty basic. Like just a couple weeks ago, it finally hit me that が could mean the same as けど. Literally after reading for what seems like 50+ hours of Japanese through NHK easy and visual novels I just put together that they weren’t using the が subject particle but the が “but” meaning. Made me feel pretty silly.
