Hardware setup and troubleshooting, as I want to sell custom built machines would be a good start. Basic care and maintenance would be a plus, has I would like to buy used machines to “refurbish” and return to use.
On the software side, I’ve been running installations and system maintenance for years but there is always room to improve.
Programming I really don’t see myself doing but I do admit having some curiosity towards python, going for years, but I really don’t know where to start to approach it.
My background is not on STEM and I was always passed the notion that without roots in hard math I can’t go far in programming.