Appetizer or starters (also known as hors d'oeuvres) are the perfect way to kick off a party or to serve between courses. They can be cold or hot and served at the dinner table as a part of the meal, or they may be served before seating. Typically appetizers are smaller than a main dish and often designed to be eaten by hand or with minimal use of cutlery.
Next time you're worried you'll forget something or what items you need to pick up at the grocery store, write them down. Pencil and notepad accomplish two important things. They make you focus on what is on your list, so you may not even have to check it later, and having that list with you takes away nervousness that could distract you from being able to remember.