This is not your ordinary course outline or set of lecture notes.
It's really a well-made online book, about 500 pages long. It
is meant to be accessible to a mixed audience including computer
types who have had minimal prior exposure to QM, so it starts by
reviewing QM essentially from scratch.
To say Preskill "understands" quantum measurement, thermodynamics,
and computation would be a gross understatement. The book is
written in a conversational style and with a panache that reminds
me of the guy whose name is on the professorship Preskill holds. http://www.theory.caltech.edu/~preskill/bio.html
Do not be fooled by the course number. This "Physics 219" is a
graduate-level course. It would be numbered "five hundred something"
anywhere else. The conversion rule, roughly speaking, is to
double the Caltech course number and then add 100.
Here's a brief quote from the book:
] To Schrödinger, the possibility of such states was a blemish on
] the theory because every cat he had seen was either dead or alive,
] not half dead and half alive.
] One of the most important advances in quantum theory over
] the past 15 years is that we have learned how to answer Schrödinger
] with growing confidence. The state |cat〉 is possible in principle,
] but is rarely seen because it is /extremely/ unstable.... This
] process is called /decoherence/.