Also, howtostudykorean.com has some good stuff. 

In addition to Isabella's comment, if you are more serious about learning the language, Sogang University offers Korean courses for free online. They have books as well you can purchase (abt 13,000 KRW), but essentially it is all the same. I haven't used this method, but according to one of my former teachers the method they use is one of the better.  They have a computer interface where you can interactively answer questions and receive feedback. If there is something you don't understand you can simpy post a question here. 

Try visit http://korean.sogang.ac.kr and have a look. Good luck!

P.s. if you do decide to take classes, avoid Korean in 100 hours by Yonsei University (awful method, very old fashioned). Best method that I have come accross so far is Ehwa Korean. 

<a href="http://www.talktomeinkorean.com/">http://www.talktomeinkorean.com/</a>;

Teaches you Korean through lessons and levels :D

I really like the hellotalk app.  Also, KoreanFromZero has a good free book and videos.

Thank you everyone! I'll check these out. ^-^