No, I drink Earl grey daily, but I didn’t even knew (until a couple of moments ago) that it was Picard’s drink. I first had one on a train in Russia, and fell in love with it. The ones I have today are not the same as that one but still very good.
That’s a solved problem, the answer is Calibre. If you want a nicer interface and some other fluff you can install calibre-web as a frontend for it. Calibre-web is very interesting if you have a Kobo e-reader because you can configure it as your store and get the books you add to calibre to magically appear on the e-reader with a nice download button next to it.
When I started my home server was an old laptop, eventually it became an old desktop, and now it’s server specific hardware. My recommendation is use whatever you have at hand unless you have specific reasons. I went from laptop to desktop because I needed more disk space, and went to specialized hardware for practical reasons (less space, less electricity, easily accessible hot swappable hard drives). But for most of the stuff I have there an old laptop would still be enough, heck, a raspberry pi would be enough for most of it.