Hi Ben, welcome to the community! 
A couple of suggestions to get your started perhaps;
- The User Manual, read it cover-to-cover - there’s lots of little bit of very good operational information in there
- The FAQs - once again, lots of good info that gives you insight into dCS’ technology
- dCS Ring DAC Technical Explanation series of articles - this series from James @ dCS is incredibly detailed on how the dCS Ring DAC and ancillary systems work
Enjoy!