These resources are just some sites that I have found in my journey to learn Korean. I am using a variety of sites really because one site isn’t enough. I started with Duolingo but found that for me, the instruction didn’t explain the grammar enough for me to understand what I was doing.
Obviously the first step in learning Korean is learning how to read the alphabet, and luckily that part is relatively easy. Then comes the grammar and vocabulary building and that will take time, not going to lie.
The site that has helped me the MOST has been HowToStudyKorean.com. I have been going through the grammar lessons, the Memrise study sets and purchased the exercises for Unit 1 and have found them to be really helpful. So here’s my plug for them.
One more note: since a lot of Korean words come from Chinese it’s helpful to learn some basic Hanja characters because they are often substituted in a lot of written mediums. I SUCK at Hanja but everything that you study can help you in your journey to becoming proficient in learning Korean.