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!!

Same. Except I started around New Year's of this year :) I used to study too many langauges at once too. It's hard to resist!

I think you're right. Focusing on one language is a good idea.

한국어를 선택하셨군요. 한국인으로서 기쁘게 생각합니다.

I'm really glad you chose Korean. I hope you can be good at Korean soon.

Hey guys, i’ve been using an app to learn Korean and it also looks so cute! It's really useful and helps you to learn Korean. Check it out at https://play.google.com/store/apps/details?id=kr.eggbun.eggconvo