These are available in PDF form: http://www.efka.or.kr/user/info/data.asp?leftNum=1 However, they are meant to be used by Koreans living abroad and therefore semi-students of Korean. This means they are meant to be used with a teacher. However, they're cute and could be used in your studies, since you should never be using just one resource anyway. How to study Korean and resources to study Korean Here's my thoughts on learning vocabulary: http://www.italki.com/discussion/91279 I love the Korean Grammar in Use series of textbooks. You can purchase them from amazon.com. I also adore these books from the Korean Ministry of Education designed for Koreans living outside of Korea. You can view them online for free here: http://www.efka.or.kr/user/info/data.asp?leftNum=1 Other than that, I like talktomeinkorean.com and howtostudykorean.com. endic.naver.com is a great dictionary, and naver.com itself is an awesome resource. I do occasionally use dic.daum.net too for a dictionary. Dongsa.net helps with verb conjugation. Then, more generally, there's youtube.com, italki.com (hehe), lang-8.com, and tumblr.com (and other blog sites). There's Monash University's site too. Also gobillykorean.com. Here's some free, older, online books too: http://www.koreanlab.co.kr/main/index.asp?t_id=1 Quality over quantity^^ Also, fluent in three months talks about language learning. You need lots of practice and exposure!!

My Korean teacher would recommend "Active Korean 1" which I have been enjoying so far. Besides being tractable, the explanations are in English which makes in ideal for self study.

There is also a free online book Korean From Zero( http://www.koreanfromzero.com/). Don't know if it's the best book, but what little I checked looked good for beginners. They have native speaker recordings for words and phrases too. It is downloadable in PDF format. It doesn't seem to go very deep, but may be good for a self study in early stage.

Definitely buy from Kleartextbook! You can start from korean beginner 1. The textbooks they mark are AMAZING.l, and they provide online PowerPoints per chapter and even audio! You can also buy along with it the workbook which are a great practice to apply the Grammer and vocab you learned

I would recommend buying the "Hello Korean" series with Lee JunKi. Well written and covers pretty much all you need for TOPIK I. You can look for free PDFs online and download all and compare to be honest. People don't learn the same way..one book may work for me but it may not work for you. So just download all you can and check which one suits you.