We've got a Dulce Gusto as a wedding present. It does loads of coffees as well as teas and a great hot choc.
It's quite small, but the nespresso ones are smaller still.
This is the one we've got:
you just stick the pod in, twiddle the dial so the lights show to the same amount as shown on the pod and press the button.
Pods cost about 3.80 for a box and you get 16 pods for that; so 16 Americano's, but only 8 Latte's for example (as you have a coffee pod and a milk pod).
You can get pods from most supermarkets and online too.