diff --git a/.DS_Store b/.DS_Store
index 127f64b..ecc0012 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/index.html b/index.html
index ac84084..68c3e17 100644
--- a/index.html
+++ b/index.html
@@ -25,18 +25,66 @@ <h1>Hello, I'm <span>Tommy Oh</span> <br>who is pursuing the program <br>in Simo
         </div>
     </div>
 <!-------------------- About Me ----------------->
-<div class="about">
+<div id="about">
     <div class="container">
         <div class="row">
             <div class="about-col-1">
-                <img src="photo/selfie-2.jpg">
+                <img src="photo/testing.jpg">
             </div>
             <div class="about-col-2">
-                <h1>About Me</h1>
+                <h1 class="sub-title">About Me</h1>
+                <p> I am currently in my second year at Simon Fraser University, where I'm deeply engaged in studying Software Systems.
+                    As the Design Lead for the SFU Open Source Development Club, I've had the opportunity to contribute to several projects with practical, real-world applications. 
+                    My journey through university has enriched my knowledge in various programming languages, including C++ and JavaScript, alongside a range of libraries.
+                    These experiences have been incredibly meaningful, significantly enhancing my understanding of programming.</p>
+                <br>
+                <p>I am passionately committed to continuous learning and skill development in the ever-evolving field of technology. 
+                    I welcome any opportunity to connect and engage in meaningful conversations about technology and innovation. 
+                    Please feel free to reach out to me; I am always eager to share ideas and learn from others."</p>
+
+                    <div class="tab-titles">
+                        <p class="tab-links active-link" onclick="opentab('skills')">Skills</p>
+                        <p class="tab-links" onclick="opentab('experience')">Experiences</p>
+                        <p class="tab-links" onclick="opentab('education')">Education</p>
+                    </div>
+                    <div class="tab-contents active-tab" id="skills">
+                        <ul>
+                            <li><span>UI/UX</span><br>Designing the basic Web/App interfaces</li>
+                            <li><span>Web Development</span><br>Web appplication Development using React</li>
+                            <li><span>App Development</span><br>Chrome Extension using HTML, CSS and JavaScript</li>
+                        </ul>
+                    </div>
+                    <div class="tab-contents" id="experience">
+                        <ul>
+                            <li><span>2023 Nov - present</span><br>Design Lead in SFU OS Development club</li>
+                            <li><span>2023 Jan - present</span><br>Software Developer in SFU OS Development club</li>
+                        </ul>
+                    </div>
+                    <div class="tab-contents" id="education">
+                        <ul>
+                            <li><span>2023 Sept - present</span><br>Pursue bacheler of science in SFU</li>
+                        </ul>
+                    </div>
             </div>
         </div>
     </div>
 </div>
 
+<script>
+
+    var tablinks = tablinks = document.getElementsByClassName("tab-links");
+    var tabcontents = document.getElementsByClassName("tab-contents");
+    function opentab(tabname){
+        for(tablink of tablinks){
+            tablink.classList.remove("active-link");
+        }
+        for(tabcontent of tabcontents){
+            tabcontent.classList.remove("active-tab");
+        }
+        event.currentTarget.classList.add("active-link");
+        document.getElementById(tabname).classList.add("active-tab");
+    }
+
+</script>
 </body>
 </html>
\ No newline at end of file
diff --git a/style.css b/style.css
index b2a2181..8f1800f 100644
--- a/style.css
+++ b/style.css
@@ -90,10 +90,66 @@ nav ul li a:hover::after {
 }
 
 .about-col-1 {
-    flex-basis: 100%;
+    flex-basis: 35%;
 }
 
 .about-col-1 img {
-    width: 100%;
     border-radius: 15px;
+    width: 100%;
+}
+
+.about-col-2 {
+    flex-basis: 60%;
+}
+
+.sub-title {
+    font-size: 40px;
+    font-weight: 600;
+    color: #fff;
+}
+
+.tab-titles {
+    display: flex;
+    margin: 20px 0 40px;
+}
+
+.tab-links {
+    margin-right: 50px;
+    font-size: 18px;
+    font-weight: 500;
+    cursor: pointer;
+    position: relative;
+}
+
+.tab-links::after {
+    content: '';
+    width: 0;
+    height: 3px;
+    background: #ff004f;
+    position: absolute;
+    left: 0;
+    bottom: -8px;
+    transition: 0.5s;
+}
+
+.tab-links.active-link::after {
+    width: 50%;
+}
+
+.tab-contents ul li {
+    list-style: none;
+    margin: 10px 0;
+}
+
+.tab-contents ul li span {
+    color: #b54769;
+    font-size: 14px;
+}
+
+.tab-contents {
+    display: none;
+}
+
+.tab-contents.active-tab {
+    display: block;
 }
\ No newline at end of file