How do you like to choose your recipes? What works for you? Do you prefer to look through cookbooks, existing recipe cards, online recipes or maybe a combination of all three? Does your family have a favorite meal that they like to have each week?
Start with what you know so you do not feel overwhelmed. If you already have a recipe box with a lot of recipes, start there. Find two or three recipes you want to make for the week and go with that. You can add to the repertoire little by little. If you typically eat out most nights, maybe start with planning just one dinner this week and increase your menu planning from there.
How do you like to store your recipes? On your computer? Print them out and keep them in a recipe box or folder? I started keeping a pocketed folder in the kitchen with the recipes I plan to make that week, so I know right where they are and can find them easily. I save them on the computer, then print them out and put them in the folder so I have them handy when I am ready to start cooking.