I have a 3 part system that works for me. I have a very large old recipe box with most of my favorite recipes on 5x7" cards. All new, untried recipes go into binders organized by the same categories as my recipe box. At least twice a month I will try one of the new recipes from the binder. If we really like it, it goes into the box, if not, I toss it. I also have a collection of older cookbooks from my mom and mother-in-law. I have the recipes that I use most often marked with tabs so they are easy to find. I know that I should transfer those recipes to my card file and get rid of the cookbooks, but for sentimental reasons, I love using the same cookbooks my mom did and reading her notations in them.