Surprisingly lots of good advice, especially when one got a few years of professional experience.

> Do It Scared

True. I've deep dived enough topics and technology to confidently say that pretty much everyone is just cooking with water as they say. .... The special specialist doing super professional job with X? - well they are probably just using this or that standard tool. Resolving problems with some very sound approaches (which they probably taught themselves through experimenting, through practice).

Especially with software: Just have a go at it. The worst that could probably happen is that you need to reinstall your Operating System (and please don't ask me, how I developed some kernel-patch-performance-evaluation)