I posted a link (http://rmdavi.people.wm.edu/Venetia.html) already, and while it's good it doesn't cover all the chapters. Since Venetia and Lord Damarel (and Aubrey!) throw around so very VERY many literary allusions and all seem to be very well read, the link above is a treasure trove for figuring them out, if you're like me and want to know what the heck they're talking about.
I was going to post it on my next progress update, but it's really too good to wait for that (my work day just started, but I suspect I will not be getting much reading done tonight.)
http://www.heyerlist.org/notes/venetia/annotations.html (link is also the title, but I always forget that and stare at these url posts trying to figure out where the actual link is.)