http://www.l24qgjfin436fqou22lusrbqmvoysp6jeey5fdn2fr7zzzv2e35jwrid.onion
This needs about two hours, two and a half hours for the lecture, and then there's normally considerable discussion about your systems and
how they fit into everything we've just covered. Lecture has no time limit from my end - we talk until everything is
covered, or you have to go (and we can carry on later).