What is expected in my academic CV as a new PhD student?
Write your CV as-if you hadn't started your PhD. As such, list the educational institutes you've attended, e.g., 


2015 -- 2017 Distinction, Master of science, University II
2010 -- 2015 Grade, Bachelor of science, University I
2002 -- 2010 High School qualification, School


And list what subjects you studied underneath at least the first two. (It's  probably no longer relevant what you studied at school.)

Mention your current position too. E.g.,


2017 -- present Doctor of philosophy, University III


And give a compressed summary of your research objectives underneath. (It should appear above the other institutes.)