Don’t delude yourself!
Linux administration is not easy as pie.
But neither is it hard if you apply yourself.
A huge plus of learning Linux administration is the availability of good books and tools for free.
If you’re a beginner to Linux, I suggest you get a cheap used PC on eBay or Craigslist for about $60-$80 and install Linux Mint, Ubuntu or CentOS on it.
Now if you don’t want to invest even $60 on an old PC, there’s a way out.
First install Oracle’s free VirtualBox virtualization software on your Windows or Mac PC and then install Linux on it as a virtual machine. It’s almost as good as having a separate Linux system.
Free Linux Books
Once you have Linux set up and working, the next step is to get a free e-book copy of William E. Shott Jr’s Linux Command Line (Second Internet Edition).
The advantage of Shott’s book is that it covers basic commands for both RedHat/CentOS and Debian derivatives like Ubuntu and Linux Mint.
Also, grab a free PDF copy of RedHat System Administrator Guide 7 offered by Red Hat.
With these two free books, you’re off to a good start in learning the wonders of the command line on Linux systems.
Free is fine and dandy but sometimes in life you have to pay to play.
So if you plan on taking the Red Hat Certification Exams, I recommend you buy A Practical Guide to Fedora and Red Hat Enterprise Linux by Mark G.Sobell and RHCSA and RHCE: Training and Exam Preparation Guide by Asghar Ghori. Both books are available on Amazon.
For a good conceptual overview of Linux, you might want to take a look at How Linux Works by Brian Ward.
If you’re seriously resource constrained, check if these books are available in New Jersey libraries.
Good luck on your Linux journey and a well paying job in Linux administration.