Recipes are difficult to organize because they come in so many different sizes and shapes. I have two sizes of card files and also use a computer program and print out recipes to keep in a binder. It’s good to have a “recipes to try” file and select one to try each week. Keep only the ones that are really excellent.
An idea from the book “Totally Organized” by Bonnie McCullough is to make a recipe index by listing favorite recipes with the page number and name of the cookbook they are in. You could set up a database searchable by type of recipe or ingredients if you feel very ambitious, but even a simple wordprocessing document is helpful. A Cookbook Recipe Index is included in the Simply Dinner Cookbook.