Adiyya vai You can complete these two courses and obtain certification before the class starts.
(1)https://www.netacad.com/courses/os-it/ndg-linux-unhatched
(2)https://skillsforall.com/course/cybersecurity-essentials?utm_source=netacad.com&utm_medium=referral&utm_campaign=cybersecurity-essentials
The TG channel: Session Summary : https://www.netacad.com/courses/os-it/ndg-linux-unhatched