I did my first 'clip' a month or two ago as the dog is now too old to go to the poodle parlour. I just used safety scissors for dog grooming with a rounded end (bought on ebay) together with a dog comb.
She doesn't look too bad, and it certainly keeps her cooler. Just don't expect a professional trim first time. I would have done it years ago if I'd realised how easy a 'pet' trim is. A show clip would be something different.