RBVM

One cannot help but empathize with the beleaguered software engineers burning the midnight oil to sift through decades of legacy code that is at the heart of the PrintNightmare exploit. To its credit, and amid a mass of confusion, Microsoft recognized the urgency and expedited patch development.

Vulnerability Management (VM) is not a terribly complex process to understand. Scan, evaluate, remediate, validate, then rinse and repeat forever. It can even be taught to people possessing only the desire to learn but otherwise lacking in technical skills and knowledge. 

When starting out, I recommend placing your emphasis on the development of successful behaviors rather than diving in head first and risk being overwhelmed by the breadth of knowledge and skill required. Successful Vulnerability Management is first and foremost a good habit.