cyber security is just a small field in the area of computer/digital forensics.
learning how to properly harden the operating system, learning proper and strong encryption, and learning computer forensics. is an added plus. ((These skills are in demand in the corporate world and sadly lacking in implementation))
having skills and confidence in this field can indeed open a lot of doors for you. But be aware you will need certification to be universally accepted in many corporate entities.
I use cyborg hawk linux, Kali linux, and caine infinity. But there are far more out there.
as well as rescue software in linux.
they are all free you just need to download, install, and learn them.
linux is not hard but it is not as comfortable as windows or mac.
with the forensic class distro's it gets a bit more difficult to get used to them but you have very powerful tools at your fingertips
once you get comfortable with it you will find just how much more you can accomplish.
but i will tell you this from the onset! Unless you are willing to venture into linux world forensics , or if you have any trepidation with change, then linux is not for you.
too many people who are not ready for it will try it and come away with a bad attitude about linux.