I've made a single PDF document that has a current snapshot of the
Sage worksheets, slides, etc. for the short course on elliptic curves
for next week. It's here:
http://wiki.sagemath.org/jmm12?action=AttachFile&do=get&target=JMM2011-notes.pdf
You might be curious to look through these before the course.
I've also posted links to individual course materials such as Sage
worksheets under Course Materials here:
http://wiki.sagemath.org/jmm12
-- William
--
William Stein
Professor of Mathematics
University of Washington
http://wstein.org