
David W. answered 03/15/19
retired
Planning (career or otherwise) is very important. And, since it is your plan, you may change it for good reason (without submitting a Change Request and getting approval from a Control Board).
The PMI web site provides excellent summaries of PMP and CAPM.. The requirements for each certification are what you need to review.
PMI membership is a good place to start. Then, a variety of documents and videos present the terms and concepts of PMI's view of Project Management. It is very different than typical approaches to doing work.