I’m loving the new Files app – which just makes the cloud easier to use. Your filing cabinet in the cloud means it is simple to access not only your photos but why not save documents you might need in a hurry up there too. In the Files app (which came with ios11) use the + sign button up the top to set up your folders, just like you would have in your filing cabinet. And you can add sub folders by going into each one and adding more sub folders. Then take a photo of your document (or webpage) and in the photo choose the send to button (looks like a box with an arrow coming out the top) and you may have to swipe across the bottom row to find the Save to file option and then put it in the folder of your choice. Photos on how to do this are in the comments. Filing just became easy.