Where can I learn Korean for free? (online/offline)

Where can I learn Korean for free? (online/offline)

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<a class="irc_mil i3597 iguOdY3kOsW0-zixyDjKkw5M" href="http://languagehub.co.nz/learning-read-write-korean/" style="border: 0px; color: rgb(102, 0, 153); cursor: pointer; outline: none; font-family: arial, sans-serif; font-size: small; text-align: center; background-color: rgb(241, 241, 241);" tabindex="0" target="_blank"><img alt="KOREAN LANGUAGE에 대한 이미지 검색결과" class="iguOdY3kOsW0-pQOPx8XEepE irc_mi" src="https://static.joinusworld.org/thumbnail/0712377b5725069f2cba2d51a79402a4.jpg" style="background-color:rgb(255, 255, 255); background-image:-webkit-linear-gradient(45deg, rgb(239, 239, 239) 25%, transparent 25%, transparent 75%, rgb(239, 239, 239) 75%, rgb(239, 239, 239)), -webkit-linear-gradient(45deg, rgb(239, 239, 239) 25%, transparent 25%, transparent 75%, rgb(239, 239, 239) 75%, rgb(239, 239, 239)); background-position:0px 0px, 10px 10px; background-size:21px 21px; border:0px; box-shadow:rgba(0, 0, 0, 0.65098) 0px 5px 35px; ; margin-top:130px; width:548px" /></a>