Do you back up everything before you do this, or just trust that your data, pics, etc will be ok?
Nothing to be afraid of.
Rooting just
allows you access to modify root directories of the device.
It is that you
can now make a mess of the operating system if you go in and play around with it.
Just be SURE to flash the correct file for your device. (600, 601, 605)
How to Root Samsung Galaxy Note 10.1 (2014 Edition) - Android Central
What Is A Nandroid Backup and How Exactly Does It Work?
The first thing you should do
once rooted is to mirror the entire system (Nandroid)
This allows you to recover to a image of your device
just as it was, media, settings, everything.
Backup, backup, backup....
It's been the same since personal computers came on the scene in the '80's
This process is essentially the same as flashing the BIOS on a PC.
Otherwise your only choice is a factory reset if things go wrong.
I rooted both my Android devices within hours of owning them.
My iPhones before that.
It's never been a problem.