On a standard Spanish keyboard, the question mark is located to the right of the "0" key, and it is usually typed by pressing the "Shift" key and the "/" key simultaneously.
Spanish accent marks are called diacritics, meaning they add an extra symbol to an existing letter. They come in three different categories: the diaeresis (), the tilde (), and the acute accent (, , , , and ). Spanish accent marks change the pronunciation of the letter they're attached to.