@maple oooooooh
An Americano is espresso and you add more water to it after to help dilute it.
So you have your shots already and your pour it over a cup full of hot water. It's a way to drink espresso but it's a bit weaker tasting and it's easier to sip over time.
For iced americano we do espresso, pour it over a cup of could water, and shake that with ice. The extra water helps the espresso flavor hold up better over ice.