Humans seem to have a compelling need to label everything. If someone wants to call their practice Draconic Wicca, that's fine with me. The Dragons could care less, I am sure. And yes, I have a Dragon guide who smacks me upside the head from time to time when he thinks I am not listening to his Wisdom.
I have DJ Conways Celtic Dragon Tarot and love it. However, I have not been overly impressed with her books. I agree that you will probably find more diverse information to incorporate into your own practice if you search for dragon magic or dragon energy. I would also recommend that you look into folk tales and mythology to develop your own understanding of Dragons.