Big personal library

Here's Bart in an episode where he switches places with a very rich kid.
I know I rarely buy paper books anymore, but I still get weak in the knees by the thought of having a personal library like this. Keeewl.

I would combine it with a café and have book readings and such, it would be a great hang-out.

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I don't understand the PNG format, or rather why it's used so much. It may be lossless or something, but often it's nearly ten times bigger than a decent JPG. Like the above screenshot from my iPad was 1.2MB! The JPG is 160k.