 Many students have told me that they struggled to remember how to connect an ammeter and a voltmeter. They mixed them up. So I have an amonic that may help you. I remember that a voltmeter starts with a V, which means it's just visiting the circuit. So it is attached to a circuit which is already complete. While an ammeter starts with an A because I am in the circuit or I'm am a part of a circuit or I am in the circuit. So I hope that amonic helps, but if it's not feel free to ignore it and find your own way to remember which way around the voltmeter and the ammeter go.