Anyway, here are two great online resources to learn the Korean Language for FREE!
1. Talk to Me in Korean (TTMIK)
There are lots of sections to focus on here (grammar, vocabulary, culture, etc.). Their lessons are in bite-sized which allow easy digestion and absorption in the brain. There are 9 levels with each level having 20-30 lessons.
For each lesson, there are notes in pdf and an accompanying podcast (less than 30 minutes long). The notes can also be downloaded in bulk as an e-book for a small fee. There are also other paper-form books, such as workbooks and vocabulary books, that can be bought from their store.
Overall, their curriculum and resources are very comprehensive and their teachers are friendly. Their app is available for download into your phone. It makes for an easy listening while commuting.
2. The Cyber University of Korea (CUK)
This is a recent found. It is a decent resource for those with some background in Korean language. I read that it was started last year. At current, they are focused for those who know the English or Spanish Language.
There are 4 levels with each level consisting of 15 lessons (less than an hour for each lesson). Similar to TTMIK, they provide notes in pdf but instead of a podcast, they have a video for each lesson. The rate of the videos are too slow for me. Fortunately, its speed can be forwarded to x1.25, x1.5 and x2.
After each level, students are able to seat for an online multiple choice test. With the completion of each test, student will be given an online certificate indicating their completion. Since CUK is made in collaboration with Korea University, I believe the certificate will be of value. However I read that these certificates only extends to the equivalent of TOPIK level 3.5. If you are one who prefer a more worldwide recognized certificate for Korean Language, I recommend going for TOPIK tests in your own country.
I hope this is helpful. There are lots of resources out there, but to be able to locate these gems are rare.