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 <li><a href="http://www.codecademy.com/afterschool/">Codecademy</a></li>
 <li><a href="https://www.udacity.com/">Udacity</a></li>
 <li><a href="http://nptel.iitm.ac.in/video.php?subjectId=106102064">NPTEL-Data Structures And Algorithms(IIT Delhi)</a></li>
+<li><a href="http://cs50.net/">CS50.net (Harvard University)</a></li>
 </ul>
 <div class="header header_h2" id='learn_ds_n_algo'>Learn Data Structures &amp; Algorithms</div>
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@@ -36,6 +37,7 @@
 <li><a href="http://discuss.codechef.com/questions/17801/introduction-to-graphs-definitions-traversal-depth-first-search">Introduction to Graphs</a></li>
 <li><a href="http://discuss.codechef.com/questions/7349/computing-factorials-of-a-huge-number-in-cc-a-tutorial">Computing Factorials of a huge number in C/C++</a></li>
 <li><a href="http://www.quora.com/What-is-the-best-competitive-programming-reference-to-bring-to-a-competition">Best Competitive Programming reference</a></li>
+<li><a href="http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-006-introduction-to-algorithms-spring-2008/">Introduction to Algorithms (MIT OpenCourseware)</a></li>
 </ul>
 <div class="header header_h2" id='programming_jewels'>Some Programming Jewels to get your started:</div>
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