I need help using an arduino, in order to power a coffee machine. I'm not entirely sure where to start.
Start by telling us what type of coffee machine it is (volotage etc) and what you want the Arduino to do.
Dead_Ard
Start by deciding exactly what the Arduino's role in producing coffee will be. An Arduino can only provide a few watts, so powering a boiler is definitely out.
Please read the comment of Dead_Ard
He is a Newbie but knows how to ask the right questions.
im pretty sure you dont want my rube Goldberg answer