Beyond Selidor

I wish I'd learned a little bit about machines and how they work and how to work on them. I work in a pretty machinery-heavy environment now, and while maintaining and repairing machinery isn't my job, I still find it intimidating, and it would be useful to be less helpless in the face of machine-related issues (or even able to identify when a machine is having an issue, let alone diagnose it). I'm slowly learning a bit more–I understand how multiple types of valves work now, for instance–but it's hard because I have no underlying framework or understanding for the knowledge to stick to!