HELP!!

Okay, does anyone know anything about buying guitar accessories? Like if I'm buying a digital delay pedal, do I need a PSU as well? And .. what's a PSU? Okay, a PSU is a Power Supply Unit, right?

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Why do people keep bloody asking me "how's the house?" What are they expecting, that it's suddenly going to change?? FFS, if that's all you've got to say to me, kindly f*** off and leave me in peace!