Dogs and animals are great subjects but somewhat a hassle sometimes. Sometimes they don't keep still and they would rather lick you or ask for a pat rather than pose for you. If you are a dog lover then I would suggest that you go out of the house instead of shooting indoors. Always find natural light instead of using a flash.
If you really have not figured out yet on what photography you really want to do, then go for a photowalk. A park where there are people, plants, flowers, landscapes and other subjects. This would help you identify what you want to do in photography. You can also bring your dog to the park and take pictures of him there.
Experiment with your camera as well. Put everything into manual mode and see what each setting does for you. You can read on these but I assure you, experimenting will teach you more about your camera.