Most of us Italians use the Moka Express stove top coffeemaker by Bialetti - but there are many imitations, so make sure you buy the one with the little man design on the lower part of the pot.
Directions are easy; just fill lower container with water upto the valve.
Fill filter with ground coffee - don't pack - and screw top of upper container tightly closed.
Set on stove, and wait for the coffee to emerge and fill the upper part of the coffee pot.
My favourite is Lavazza Gold - I travel a lot and I can't always find Illy - and my Moka Express goes wherever I go.
It should be every day and kept washed and clean. The say the longer the Moka Express is in use, the better the coffee.
If unused for a period of time, throw away the first batch of coffee.
Don't bother assembling the pot closed in between uses - it's better to let it dry out completely.
And don't ever put it in the dishwasher!