In college we've had to have mega loads of reviewers to study on. Photocopies of lecture and notes, hand outs, even copies of previous exams. In a year you can accumulate so much paper you'd be afraid to light a match in your room. Then during second year in college I saw a classmate have a very simple but effective filing system, then I went to the extremes of file organization, so to speak.
1. Envelopes or folders. I got dozens of plastic envelopes to put my files in, I chose envelops to keep those papers protected and in good condition when I need to look them up again.
Bed Trays
2. File Space. All those envelopes went into a main subject file box and put it in a designated shelf.
3. Labelling is key to organization. what the point of organizing it when you cant find something you'll just mess everything up again. They have a lot of new labelling gadgets you can use. back in college I used post-its, stickers, and black ink markers. you can jazz it up with those label doodles they sell in stores. Make sure you are labelling the correct file.
4. Pick an accessible spot for your files. what I did is I had a shelf built for my files. You can put your files in a file box and keep them under your bed next to each other, stack them up or get a filing cabinet. What ever suites you.
5. Paper tray, This has been very useful, I put mine on my desk, whenever I come home from work paperwork I have to read goes right in the tray. Just dump it there. and you know exactly where and what it is you have to read. You can also set one up for outgoing files or mails.
6. Trash it. Files that don't go into my filing system go directly into my trash. Maybe you would like to go and get a shredder too for junk files that contain personal information. I had an office mate who burned his junk files every two weeks.