One of my all time favorite, informative, life-saving books is, "Parrots for Dummies" by Nikki Moustaki. When I first had a bird laid on me, knew nothing of parrot forums and had no one to ask, I found this book in the pet store and it saved our lives! There is a section in it about clipping birds wings yourself. I highly recommend this book for every new-comer to parrothood