Planck's oscillators and the energy assumption

[Saketh]

First of all, why is $$E = h\nu$$?

Second, where can I find the derivation behind Planck's "oscillators in a box" calculations that led to the assumption that energy is quantized?

I realize that my questions are a bit vague, but I cannot make them more specific as I do not have a firm grasp of the subject.

 

[Dr Transport]

Any introductory QM book should have the answer to the first question. The second question follows from the first and is found in texts on statistical physics.

 

[Saketh]

Any introductory QM book should have the answer to the first question. The second question follows from the first and is found in texts on statistical physics.

The problem is that the only book I have access to is "Introduction to the Quantum Theory" by David Park. The first question is not answered in this book.

As for the second question, I don't have access to statistical physics texts at all. Is there an explanation on the internet somewhere? (Is http://www.phys-astro.sonoma.edu/people/faculty/tenn/P314/BlackbodyRadiation.pdf" a good one?)