For some months now, I've been trying to set up an Mbin instance, since as it's more manual than the other softwares I found, and I understand things better if I can see the logic behind them. I'd rather do that before going for automated processes where if something breaks, I don't know how to handle. However, trying to figure things out as I go, it's so much stuff that I figured out instead what I knew was very little.

As I was also interested in hosting other sites, this made me reevaluate things, and turns out several things I don't know, like how to host two sites in a same machine, how to handle horizontal attacks, what some tools are used for, etc.

So going back to the title, what to study? Maybe some specific book? Private classes/courses? Online tutorials? Something else? Just no university suggestion, please - from experience, they are extremely shallow at best.

Thanks in advance!