DSA (data structure and algorithms)
* prerequisite - basic knowledge of any one programmimg language
* beginner to advance level
* course by - love babbar
OS (operating systems)
* prerequisite - nothing is required
* clears all your doubts regarding interviews and some for college exams
* handmade notes
* course by - love babbar
DBMS (data base management system)
* prerequisite - nothing is required
* beginner to advance level
* easy explanation
* course by - gate smashers
Computer networks
* prerequisite - nothing is required
* best free content
* beginner to advance level
* easy tutorial
* course by -gate smahers
OOPs (object oriented programming language)
* prerequisite - basic knowledge of computer language
* covers all related to interviews or exams
* easy tutorials