The 'Optional' topics will not be tested in the exam and you may prefer to skip those. However, I would advice to visit these topics after you are done with the exam as these can help in enhancing your knowledge on the subject.
May I please have a little more clarification on the "Optional" videos for CAPM. Are those subjects not on the CAPM exam?
I'm new to PM PC & I'm not sure I'm asking this question in the right place.
Training for Project Management Professional (PMP)®, PMI Agile Certified Practitioner (PMI-ACP)®, and Certified Associate in Project Management (CAPM)®