If you have ever used clippers to shave a child's head, you at least have the basics down. Shaving your dog's body is very similar, just a lot bigger and maybe a bit wigglier. Since this a drastic measure, you may want to talk to your dog's vet before you set to work. Keep in mind that shaving a dog's fur down to skin level leaves them with no insulation to keep them warm in the cold weather and cool in the hot weather. While there are medical reasons for shaving a dog, doing it because you think it might help your dog stay cool actually has the opposite effect.
You can safely bet that the last thing Fluffy wants is to have her body shaved down to the skin. At the same time, the sound of the clippers may make her more than just a little nervous. Take plenty of time out to let your dog get used to the sight, sound, and feel of the clippers before you get started. This will make things go far smoother for both of you.
It won't take you long to master the fine art of shaving your dog. Just keep in mind the hair you are shaving off is the only protection your dog has against heat, cold, and the sun's UV rays. Consult your vet before shaving your dog and make sure you have plenty of sunblock on hand to protect your pup's skin.