To answer your question...you will need to learn the CA flows too...partly because you will be of no help to your sim partner when its their turn to fly. It also helps your overall learning of the procedures and the aircraft. That being said...

Don't worry about the flows right now...you won't have to start studying that too closely until the nearly the end of systems class.

For now, focus on Indoc and learning the policies and procedures...gotta get past that first before you can concentrate on flows