@scottalanmiller said in New to Linux Administration: RHEL-Based or Debian-Based OS:

I agree, both is the obvious choice. But to truly answer the question, I'd focus on Ubuntu (not Debian) and then RHEL. Debian is great, but it is Ubuntu specifically that has the market.

Yes, almost the same is never the same as exactly the same.

Before you can get in to what OS to run the clients on, do you have to ask what apps the business needs to run? If they need some kind of CAD package and it's only offered on Windows, the linux client goes out the window. (pun intended)