How to use tags for filtering images to be displayed using views?
I can almost guarantee that this question has been asked before, but still ...

If you did a standard Drupal 7 install, then you should already have a Tags taxonomy. Add that taxonomy to your content type.

In the view, you could do a couple of things.


Create more than one variation of the view. In each variation, filter the view to only contain the tag that you want.


OR


Use a Contextual Filter to grab the specific term from the URL. That way, you will have as many different views as taxonomy terms. This is more complicated, but it will help you learn a lot, and it is almost always the better way to do this sort of thing.