diff --git a/public/info.html b/public/info.html
index fabf5e79d97d5799b75cac465893f8d3a862b1fb..27fc5537f2b7feeda7a4170244acdfcbaad70d8f 100644
--- a/public/info.html
+++ b/public/info.html
@@ -13,9 +13,24 @@ Mobile Phone : 010-6747-3850 </br>
 Work email : hwan@ajou.ac.kr </br>
 Personal email : hwanyong.lee@gmail.com </br>
 <p> 
-<a href="https://calendar.google.com/calendar/u/0?cid=Y184OTFhNmRhYzA1Yzg1ZjI2MGRmYTdiMmZlNjAwNWNmMGQ2OGU2NDUxY2E3ZTE4NzQ1NTQ1MGIzMjk5M2E3ZTAyQGdyb3VwLmNhbGVuZGFyLmdvb2dsZS5jb20"> Hwanyong Lee's schedule </a></br>
+<a href="https://calendar.google.com/calendar/u/0?cid=Y184OTFhNmRhYzA1Yzg1ZjI2MGRmYTdiMmZlNjAwNWNmMGQ2OGU2NDUxY2E3ZTE4NzQ1NTQ1MGIzMjk5M2E3ZTAyQGdyb3VwLmNhbGVuZGFyLmdvb2dsZS5jb20" >
+Prof. Hwanyong Lee's schedule - 공개 일정 </a></br>
+
+<a href="https://drive.google.com/drive/folders/1kPlsH-UUxesKonNH6vxenneVn3EDFg1U?usp=sharing"> 
+강의녹화 저장링크 (학기가 끝나거나 용량이 부족하면 자동 삭제됩니다. 꼭 필요하면 다운로드 받으세요.) </a></br>
+
+<a href="https://open.kakao.com/o/gjwxpkih">
+오픈소스소프트웨어입문 단톡방 </a> </br>
+
+<a href="https://open.kakao.com/o/gBP5qkih">
+교육대학원 - EDU6046_ 미디어 및 문화콘텐츠 개발(R0131-1) 단톡방 </a> </br>
+
+<a href="https://open.kakao.com/o/gI3rrkih">
+글로벌IT - IOT 프로젝트 단톡방 </a> </br>
+
+<a href="https://open.kakao.com/o/gy4Rvkih">
+자기주도연구/자기주도프로젝트/동아리/소학회/파란학기 - 주간 미팅이 있는 학생과의 단톡방 
 
-<a href="https://drive.google.com/drive/folders/1kPlsH-UUxesKonNH6vxenneVn3EDFg1U?usp=sharing"> 강의녹화 저장링크 (학기가 끝나면 삭제됩니다.) </a></br>
 </p>
 </body>
 </html>