Try this thread to start:
Does the Europiccola have two switches for heat?My cousin had one of the two-switch models back in the day -- great fun to use.
The ones sold in North America didn't say minimo and massimo, which is why searching for those terms here won't help you -- I have usually heard them called the "high" & "low", or "high wattage" & "low wattage", switches. Basically the low wattage (minimo) one to get the right temperature for coffee, and the high wattage one (massimo) to bring the temperature up for steaming milk.
Like the posters in the other thread, I used the high (massimo) to get the machine to heat up faster, then switched to just low (minimo) to get the right temperature for pulling a shot of espresso.
They are great little machines -- have fun!
Unsolicited advice: If you haven't already done so, I urge you to lubricate the machine (including the lever pins) especially if the machine has been sitting unused for a while -- it will add years to its life, and prevent serious damage.