diff --git a/courses b/courses
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+dbms : DBMS (Database Management system) GATE SMASHERS : https://www.youtube.com/playlist?list=PLxCzCOWd7aiFAN6I8CuViBuCdJgiOkT2Y
+mySQL : Structured Query Language - SQL (Hindi) GEEKY SHOWS : https://www.youtube.com/playlist?list=PLbGui_ZYuhigbr-fJ_9HlOqwg0S24Z73-
+algorithms : Algorithms ABDUL BARI : https://www.youtube.com/playlist?list=PLDN4rrl48XKpZkf03iYFl-O29szjTrs_O
+coa :Computer Organization and Architecture GATE SMASHERS : https://www.youtube.com/playlist?list=PLxCzCOWd7aiHMonh3G6QNKq53C6oNXGrX
diff --git a/pikaachu.md b/pikaachu.md
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+data structures : Mastering Data Structures & Algorithms using C and C++ : https://www.udemy.com/course/datastructurescncpp/
+java : Mastering Java SE programming from Beginner to Master : https://www.udemy.com/course/java-se-programming/
+cpp : Learn C++ Programming -Beginner to Advance- Deep Dive in C++ : https://www.udemy.com/course/cpp-deep-dive/
+graphic designing : Graphic Design Masterclass - Learn GREAT Design : https://www.udemy.com/course/graphic-design-masterclass-everything-you-need-to-know/
diff --git a/riya.md b/riya.md
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+++ b/riya.md
@@ -2,3 +2,4 @@ Data structures : Mastering Data Structures & Algorithms using C and C++ : https
 Java Programming : Mastering Java SE programming from Beginner to Master : https://www.udemy.com/course/java-se-programming/
 C programming : Learn C++ Programming -Beginner to Advance- Deep Dive in C++ : https://www.udemy.com/course/cpp-deep-dive/
 Graphic designing : Graphic Design Masterclass - Learn GREAT Design : https://www.udemy.com/course/graphic-design-masterclass-everything-you-need-to-know/
+web development : The Complete 2020 Web Development Bootcamp : https://www.udemy.com/course/the-complete-web-development-bootcamp/