Adobe Photoshop and Cloud Syncing; Automatically backing up photos

I am searching for ways to automatically back up all of the work I do in PS on images on my computer.

At this point, I am investigating how Adobe Photoshop and Cloud Storage syncing works.  I have over 1 TB of photos stored on my computer in one folder with multiple sub-folders (probably hundreds). 

My questions:

Once I upload all of my photos to the Cloud and “sync” them with the folders on my computer, as I work on an image on my computer are those same changes made to the photo in the Cloud?

If I add or delete a folder in my computer, is that folder added to or deleted from the folder in the Cloud?

Another scenario:  If, instead of having all the photos on my computer I have them on an external hard drive, would the syncing process work the same as if they are on my computer.

And, finally, are there any other options for automatically getting my backup photos (where ever they may be stored) to reflect any and all changes made on a daily basis to the images stored on my computer (or external hard drive)? 

Please be aware that I am not a technical guru nor do I have thousands upon thousands of dollars for this project.

I appreciate any and all advice.