There are a few things to keep in mind when starting out dog grooming. First, be sure to have all the necessary supplies on hand, including shampoo, conditioner, brushes, combs, and scissors. It's also important to be gentle with the dog and to take your time. Start by brushing the dog's fur and then move on to shampooing and conditioning. Be sure to rinse the dog thoroughly and then dry him off with a towel. Once the dog is dry, you can start trimming his fur. Be sure to use sharp scissors and to follow the direction of the dog's fur. When you're finished, give the dog a treat and a good rubdown to show your appreciation.