First, there are some best practices for document retention, and one of them is "could I find it elsewhere if I needed to?" If so, don't save it locally - search for it later.
If you later want to find a *particular* resource, use an electronic tool - your brower's bookmarks are a simple solution, or a note-taking tool (there's a zillion of them out there - e.g., EverNote). I use a simple texts file - works fine (more here).
If you really want to keep the paper, think a bit more carefully about how you'll use it, i.e., focus on the act of retrieving, not filing. You may come up with a different title.
If *that* doesn't help, consider an indexing tool. I'd strongly recommend against a home-grown one - too much work. A very popular one is here: http://www.thepapertiger.com/