Project guidance - begginer

Hello everyone,

I would like to create a project and i have no idea about the hardware that it will need. The idea is to trigger commands when the house door open or closes. About the software everything is fine it will be done but what about the hardware ? Which arduino product should buy and what extra gonna need ?

Any answer is appreciated. Thank you.

I would advice a 'standard' arduino uno, A 'lever switch' or magnetic switch(reed switch) to detect the door opening Some wire .