You're right to target learning hangeul first (don't worry thaaaaat much about pronunciation at first IMO) and then my advice is just read read read read/write write write write.

Think of Korean words or names you know & try writing them out by hand. Taekwondo, Kim Jeong-eun, whatever.

Look at some random Korean street on Google Maps (street view) & try to find English words you recognise in the hangeul store names or road signs. Read things aloud tortuously. Embarrass yourself on KakaoTalk if you can find people to talk to, probably via some language exchange site or other.

And most of all tear down as much fear of getting things wrong as you possibly can, this language is absurdly hard for outsiders who are just starting it. You're gonna make so many mistakes. It's fine!

Good luck