What is the best way to learn the korean language when you aren't taking a class?

Watching K-dramas and listening to K-pop has really helped me get a grasp on how the native speakers speak, also interviews and game shows with Korean Idols and English subtitles; like Man on a Mission, and After School Club. Some of my favourite K-dramas are To Be Continued, and I Am Not A Robot, also any of the K-dramas they have on Netflix are really helpful. Also the book Making Out in Korean is really helpful for beginners. There's a ton of basic greetings, and a little flirting .-. but yeah I've found it really helpful while learning Korean.