#like.... rareta verb ending made the MOST sense for me after reading this

[rigelmejo]

I've linked this before, Sabuki Yesterday's Grammar Guide for Japanese

https://sakubi.neocities.org/#

My favorite grammar guide for Japanese. I think it's a quicker read than Tae Kim and sometimes easier to understand. It's very suitable for a crash course or skim overview of japanese grammar so you know what to look out for and can look up grammar points more in depth with other resources as you get more interested or need more details. Alternatively, I think wasabi-jpn.com has a decent grammar guide summary (but its more for beginners), Tae Kim's Grammar Guide is a great free option, and there's some other good free sites. Sabuki is just one nice one worth mentioning.