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+# MIT6.050J: Information theory and Entropy
+
+## Descriptions
+
+- Offered by: MIT
+- Prerequisites: None
+- Programming Lanuages: None
+- Difficulty: 🌟🌟🌟
+- Class Hour: 100 hours
+
+This is MIT's introductory information theory course for freshmen, Professor Penfield has written a special textbook for this course as course notes, which is in-depth and interesting.
+
+## Course Resources
+
+- Course Website: <https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-050j-information-and-entropy-spring-2008/index.htm>
+- Textbook: <https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-050j-information-and-entropy-spring-2008/syllabus/MIT6_050JS08_textbook.pdf>
+- Assignments: see the course website for details, including written assignments and Matlab programming assignments.
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+# CS50: This is CS50x
+
+## Descriptions
+
+- Offered by: Harvard
+- Prerequisites: None
+- Programming Lanuages: C, Python, SQL, HTML, CSS, JavaScript
+- Difficulty: 🌟🌟
+- Class Hour: 20 hours
+
+This course has been voted the most popular public course by Harvard students for many years. Professor Malan is very passionate in class. I still remember the scene where he tears up the Yellow pages to explain the dichotomy method. Since this is a university-wide public course, the contents are pretty friendly to beginners and even if you already have some programming experience, all the programming assignments are quite exciting and worth a try.
+
+## Course Resources
+
+- Course Website: <https://cs50.harvard.edu/x/2022/>
+- Recordings: <https://cs50.harvard.edu/x/2022/>
+- Assignments: <https://cs50.harvard.edu/x/2022/>