Analogy

Let's say you wanted to become a General Contractor for home construction projects. What would you need to learn to achieve your goal of attaining your license and becoming a General Contractor? What trades would you need to study? Masonry, carpentry, plumbing, electric, HVAC, painting, etc.?

Knowing what aspects of technology you, as a musician, need to know may be just as unknown right now as are the aspects of how you'd become a General Contractor. But, know, there are many areas of technology that, when learned, practiced, and understood, will serve you well as a versatile musician in today's market.