I really want to like Guix; on the surface it seems very interesting. I’ve been messing around with an installation on my old ThinkPad, but trying to learn anything about it- even as a long time Linux user- is making my head spin. Are there any resources other than the dense manuals on the GNU web pages that aren’t from System Crafters? The biggest questions I have so far:

What happens when a package is not available in Guix? How can I install software from source files? If I wanted non-free software, like Steam, what is the best way to go about it?