This app was mentioned in 3 comments, with an average of 1.67 upvotes
Can't answer your questions, but I wanted to share this Android app I downloaded a few days back which lists lots of different grammar parts of Korean and explains them in a nice, concise way. Very good for reviewing what -에 and -의 does for example.
edit: oh and the creators actually did a post on this sub! neat
Right now I'm mainly studying from an app called Korean Grammar Haja (basically has a bunch of grammar patterns with examples) and I also use Wiktionary to study verbs haha (they conjugate many verbs using the 4 speech levels, it's something that used to confuse me a lot but the site is very easy to follow).
I've heard many people watch kdramas and stuff to learn Korean, I've never watched one but maybe I should give it a try.
Have you started to understand their content? I can only pick up some words and the occasional sentence but it makes me feel good with what I've studied so far :D
I use grammar haja (하자):
This is an awesome app for learning Korean. https://play.google.com/store/apps/details?id=laituan245.projects.koreangrammarhaja
Sorry for formatting I'm on mobile.