i have 3 ring binders with patterns sorted by---
table runners/placemats,home decor
bed size quilts- pieced
appliques
block patterns
bom's
so right now i have 5 binders of downloaded patterns or loose patterns (i use plastic sleeves you can put patterns into then add to the binder bought at the office supply in boxes of 100) to hold patterns from other places- the down loaded ones i print on printer paper that has 3 holes already.
so i would say- divide yours into what makes sense to you=
the binders were very inexpensive- the 3-ring printer paper isn't any more expensive than regular printer paper- the the plastic sleeves were under $10 ... sure made mine easier to find what i'm looking for :)