I am also a beginner in Korean. I started learning at the end of last year, and now I can read Korean fluently.
For beginners, I have some suggestions:
First of all, the most important thing in learning a language is pronunciation. In pronunciation, I suggest not to teach ourselves, but to find some more formal classes to follow, because many Korean pronunciations on the Internet are actually Korean pronunciations, and the contents are uneven, which makes us beginners feel very confused and at a loss. You can't master it by self-study.
Secondly, in terms of teaching materials, we should choose more authoritative books and recommend one, Standard Korean by Peking University Publishing House.
Thirdly, if you participate in Korean forums, listen to Korean songs, practice your pronunciation and sense of language, and cultivate your interest in language, you can learn better.
Recommend an online learning class, (I'm not advertising, I also signed up for the class, because the teacher teaches well and is responsible, so I'll give you a publicity. )/The tuition fee for the third class of this online class should be the cheapest in the market, but the teacher is very responsible.
/If you don't want to pay for study, there are many videos in Korean, which may be helpful for you to learn knowledge and have a look.