Letters of instruction are a simple and free way to help your family take care of your personal and financial affairs the way you want after you have died. If you are a part-year resident, enter the date you estab- lished residency in Utah and the date the residency ended.A letter of last instruction is an organized way for you to give your family all the facts about your finances—and have a basic tool for your own. It's to fill up the house. It's to gather as many as they can. Step 1 Fill out the attached Letter of Instruction.