I keep seeing the term rooted, what is that or How's It done, so I can be sure not to do it.
Also, I keep seeing people say that everything can be brought back up no matter what, are they wrong? Just wanting to make sure my work info stays gone from Pics I took. So I wouldn't have to get a program or pay to have it wiped clean. Thanks
Let me make things clear for you
Let's say that your phone have 4gb internal memory.
Now let's assume that you put 100mb of important and confidential files on it, they can be pictured or audio files or videos.
The other day you decide that you want to sell this phone, so you delete all that important 100 mb photos or videos.
But when you delete those photos what actually happens is this-
Your operating system just labels the memory locations on which the photos or videos were present as available for storage.
In other words the operating system does not delete anything but just labels those memory locations(on which your photos and videos were present) available to be used again to write data on them.
So unless you actually overwrite that memory location your files can still be retrieved.
Now regarding overwriting-
Since we do not know which memory address the phone used to store those 100mb of files, hence in order to actually remove those files you will have to overwrite the entire phones memory with some useless data and then you are safe.
Regarding root-
A root user is one who had permission to read and write all files on the device.
Such a permission is used to install special apps that can do a variety of things that would not have been possible otherwise, some use cases are-
Create backup of phone using clock work mode.
Remove bloatwares and much much more.
Every phone had a different procedure to attain root and requires quite a many steps and hence you need not worry about getting your phone rooted accidently.
Check your personal messages and watch the video I have shared to know more about root and what you can do with it.
I hope I was help full.