Bitcoin focused careers

TLDR: what subjects or trades should I study to become more involved with Bitcoin? Or what companies should be investing time into on the job hunt with a degree?

Good afternoon everyone ,

I'm 29 staring down the barrel of 30 late this year and I'm in an awkward spot of my life both personally and professionally. I have a marketing and econ degree and, like many, have found it to be less useful than promised. (Especially the keynesian econ part).

Whatever tho, life goes on, I can change my life for the better and want to.

The only thing I am certain of at this point is Bitcoin and companies that utilize or build on top of Bitcoin. I'm not really sure how to target companies involved with bitcoin using my marketing degree, and I don't feel like grabbing another degree and putting myself further in fiat debt without knowing I can get a return. I view MBAs as graduate liberal arts degrees. Even more useless than what I have.

I've been thinking about trades, specifically electricians which could open doors to work on and with hardwares and systems running bitcoin. I'd be open to return to school for a second degree or masters but again I don't know how I could position that to a company.

Any suggestions?

TLDR: what subjects or trades should I study to become more involved with Bitcoin?