One of the first things that you need to do when you're the executor for the estate of someone who has passed away is to get your hands on a copy of the person's will. Sometimes, you'll already have a copy of it. In other cases, you may need to retrieve it from the individual's attorney. While there will be a lot of tasks for you to oversee in the very near future, having your estate planning lawyer assess the validity of the will should be a priority on your to-do list.