I will be learning linux in next 180 days

RHCSA (red hat certified system administrator)
It is a global level certification that focus, on to perform the core system administration skills required for Red Hat Enterprise Linux environments.

Linux:

• Linux is an open source kernel.
• Linux base OS are like unix based.
• Linux kernel written by Linux Torvalds in 1991.

Linux Distributions
https://en.wikipedia.org/wiki/List_of_Linux_distributions

Comments

[Sharavana]

If you like windows then you can try linux mint!