Abstract: This paper presents a new category that has been added to the classification of Kim and Ko (2017) for programming learning systems, namely the Online Coding Tutorial System (OCTS) category.

A comprehensive hands-on tutorial covering essential C programming concepts with practical examples and exercises. Perfect for beginners learning C from scratch.

Free Nmap tutorials for beginners with 31 interactive lessons. Easy-to-follow programming guides with hands-on practice exercises.

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