If you are ever interested in finding out more about Druidic spirituality a good place to start is The Order of Bards, Ovates and Druids. There you will find information on their history, practices and beliefs, including articles on tree lore, stone circles and more.
Make sure you check out the audio introduction and note the emphasis on oral tradition. I find it interesting how they are adapting this path to the internet age.
Christians would be particularly advised to wander over to their section on Christianity and Druidry. This will test out your understandings on the difference between critical contextualisation and religious syncretism if nothing else. For instance, is Celtic Christianity what is really on offer here? Or is the Celtic Spirituality they invite you to here more a form of ChristoPaganism? What's the key differences? What's not? I will leave you to ponder over that.
For information on Druidry in Australia see: