For me, the #1 skill here is having technical ability to actually use the product you're writing about. Like, don't just read about the product and do some write up -- you need to actually use it. Keep a list of questions or things that confuse you while learning since these will confuse other people too -- get answers to those questions. The reason, sounds so simple, is that most technical writing is marketing crap. It's easy to spot too. We live in a world that is flooded with SEO crap and technical people are starved for real technical content.
I have worked in this field and that's my experience. Here's my website https://sysadmincasts.com/ as proof. I work at a tech company and write blogs, create demo videos, and stuff like that for a very technical product. Happy to answer any questions. Also, comp can be pretty good like 3x+ what that are talking about in that blog if you are good. The job postings for this are normally something like "technical writer" or "technical marketing engineer".
I have worked in this field and that's my experience. Here's my website https://sysadmincasts.com/ as proof. I work at a tech company and write blogs, create demo videos, and stuff like that for a very technical product. Happy to answer any questions. Also, comp can be pretty good like 3x+ what that are talking about in that blog if you are good. The job postings for this are normally something like "technical writer" or "technical marketing engineer".