This is an update to fix a few typos found in the first three chapters. Other than that, there are cosmetic changes to the diagrams and page layout. Text leading has been reduced and page margins adjusted. Denser flow of text has brought the page count down from 939 to 795. Have fun reading, watching the videos, and playing with the REPL!
Here is the updated PDF. (Previous version still available.)
EDIT 2012/11/25: newer version of the PDF.
SICP 
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Thank you!
This version of SICP is great. However, I have noticed that the single quote used in the source code seems to be a non-standard one (U+2019) which means you can’t cut and paste into the REPL without getting lots of errors!
Thanks, the quote issue is still there, unfortunately. It’s been a minor annoyance for me too. The quotes are fine in source code, but get converted to more “typographic” apostrophes by TeX. I’ll try to look if I can persuade TeX to use standard quotes. Maybe it’s a simple fix. Advice from people more versed in TeX is welcome. In the mean time, I would encourage to use the original Scheme code here:
http://mitpress.mit.edu/sicp/code/index.html
According to the docs you should be able stop this happening:
http://www.gnu.org/software/texinfo/manual/texinfo/html_node/Inserting-Quote-Characters.html
However, I tried this and it just seemed to replace the quotes with commas!
Hehe, that’s true! Maybe the non-standard monospace font broke it. Good that you found this Texinfo setting, I didn’t know about it.
Great book. Thank you. However, one question is in my mind. Did you consider providing the book in mobi format for Kindle?
Yes, it is under consideration. In the mean time, please take a look at these mobi and prc versions:
https://github.com/twcamper/sicp-kindle
http://joshhuckabee.com/structure-and-interpretation-computer-programs-sicp-kindle
I’m trying to get the PDF printed (privately) by Lulu. But the PDF as-is is 9.2×12.3. I see the texinfo.tex specifies that size as “letterpaper”. Is this some weird typesetting thing, something the PDF output is doing wrong or is it really just not right?
The 9.2×12.3 inch format is intentional. I was adjusting page margins while keeping text area fixed to preserve pagination. I should have created new format name instead of tweaking the definition of @letterpaper. This 9.2×12.3 is meant to be very close to 4:3 aspect ratio of most tablet computers.
You may want to postpone the printing — a new version with better pagination and fewer pages is coming out soon. It has the same page geometry, though. They shoud be able to shrink it to desired paper size in Lulu.
EDIT 2012/11/25: New version is ready: sicp.pdf.