I'm only 12, but I've read a lot of adult physics books. Quantum physics is how things work on a quantum level, so we're talking about things unimaginably tiny, like quarks. Not atoms, but the things that make up atoms. It's true that black holes are more astrophysics, but most of the books I've read have a mix.
Multiverse, if you want to learn more about quantum physics, I have some books you might want to look at.
The Universe In A Nutshell, a Stephen Hawking book which you've probably read, if you're working on A Briefer History of Time.
QED (quantum electro-dynamics), by Richard Fennyman (pronounced fine-man). It's a very in depth book, not as funny as Hawking, but written for the general public (of college level grads).
I would recommend that you read them both multiple times to fully comprehend everything. That's my policy.
Also, Antimatter, by Frank Close is a really interesting book. Not super related to QP, but very interesting.
Are you enjoying A Briefer History of Time?
I'm fine, seeing as you asked.-Foaly
Gnommish… Gnommish… What blasted translation system doesn’t have Gnommish?