diff --git a/courses/free-courses-en.md b/courses/free-courses-en.md
index 38fade886..75d97b0c6 100644
--- a/courses/free-courses-en.md
+++ b/courses/free-courses-en.md
@@ -347,7 +347,7 @@
 * [C Programming 2021: Master The Basics!](https://www.udemy.com/course/c-programming-2019-master-the-basics/) - Ali Badran (Udemy)
 * [C Programming and Assembly Language](https://www.youtube.com/playlist?list=PLyqSpQzTE6M8O9Oy9t-yhiAUXOi-rmTp_) - NPTEL NOC IITM
 * [C Programming for Beginners](https://www.youtube.com/playlist?list=PL98qAXLA6aftD9ZlnjpLhdQAOFI8xIB6e) - Programiz
-* [C Programming Tutorial](https://www.youtube.com/playlist?list=PL_RGaFnxSHWoGzOXqtKeM71OLpvZbuU0P)
+* [C Programming Tutorial](https://www.youtube.com/playlist?list=PL_RGaFnxSHWoGzOXqtKeM71OLpvZbuU0P) - The Bad Tutorials
 * [C Programming Tutorial for Beginners](https://www.youtube.com/watch?v=KJgsSFOSQv0) - Mike Dane (freeCodeCamp)
 * [C Programming Tutorial for Beginners](https://www.youtube.com/playlist?list=PLsyeobzWxl7oBxHp43xQTFrw9f1CDPR6C) - Telusko
 * [C Programming Tutorials for Beginners (Complete Series)](https://www.youtube.com/playlist?list=PLS1QulWo1RIZlA5oGczk8kY7Eenytc33s) - ProgrammingKnowledge
@@ -355,7 +355,7 @@
 * [C tutorial for beginners](https://www.youtube.com/playlist?list=PLZPZq0r_RZOOzY_vR4zJM32SqsSInGMwe) - Bro Code
 * [Learn C Programming](https://www.programiz.com/c-programming) - Programiz (HTML)
 * [Programming in C](https://www.youtube.com/playlist?list=PLdo5W4Nhv31a8UcMN9-35ghv8qyFWD9_S) - Jenny's lectures CS/IT NET&JRF
-* [The Arduino Platform and C Programming](https://www.coursera.org/learn/arduino-platform)
+* [The Arduino Platform and C Programming](https://www.coursera.org/learn/arduino-platform) - Ian Harris (Coursera)
 
 
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