Plan the menu, but don’t do it all alone. Use technology to engage your guests: Post an online sign-up sheet for side dishes, desserts, and tasks to avoid duplication. Anyone need recipe inspiration? Hit the classics. No longer your grandmother’s cookbook, the 75th anniversary edition of the time-tested Joy of Cooking from Amazon Books ($20.55 for Prime Members) is updated with quicker, healthier meals for modern tastes. Fun idea: Have a contest for best and worst desserts.