Deleting pictures from camera roll and photo stream but not from other folders

Question

Hey everyone,
I am new to I phone and using iPhone 5 with iOS 7.1.2.
I like to keep my photo folder organised and sorted. For example I created different folders on my iPhone for wallpapers, my personal pics and work pics.
Now after adding all these pics to their respective folders i deleted them from Camera roll and my photo stream ( thinking that they would still be in their folders) and now I am screwed, because everything is deleted  .
Thankfully, I have the backup, but please can anyone help me to understand the difference between camera roll and my photo stream and how could i keep all my pics in different folders and just not in camera roll or my photo stream.

Answer 1

The way I do that is to organize them on my computer. I periodically import all of the Camera Roll to the computer. That is a good thing to do to insure you have a copy in case of loss of the phone or other problem, even if you backup the phone. Import can be done by methods described in iOS: Import personal photos and videos from iOS devices to your computer
Once they are on the computer I organize them in iPhoto on my Mac. If you have a Windows computer you can organize them in folders. Once they are on the computer I delete them all from the Camera Roll on the phone to make it easier next time -- i.e., the Camera Roll always only contains the photos that I haven't yet organized.
I only want some of the pictures that I am keeping to be sent back to the phone, so in Windows I made a second copy of those (in iPhoto on a Mac I use Albums instead). I had a main folder (e.g. "Photos for iPhone") and subfolders (only 1 level below the main folder) with various topics. Then use iTunes to sync the photos back to the phone (selecting the main folder). iTunes: Syncing photos
The end result is that they are organized in Albums on the phone, are not in the Camera Roll, and I have a copy of them on my computer.