Issues with the bibliography

I'm finding it challenging to research a particular section of art therapy theory when I have limited knowledge in art therapy itself.

I'm envious almost for the other MA and Msc students on Research and Enquiry because they have a fundamental knowledge and basis for their subject, assuming that they a BA degree in their profession. Whereas we do not have this. We are almost going in as complete beginners which is why I feel over my head in attempting to find out basic art therapy theory as well as going in depth, e.g finding out what I am interested in proves difficult for someone who has barely touched on the subject.