Law
Mostly about contracts, the odd bit of tort, quite a lot of regulation (Because we are all regulatory lawyers now), some jurisprudence around the edges (more of it is mainstream epistemology really), and an awful lot of miscellany relating to derivatives and master trading agreements.
Firm views on indemnities.
Will make fun of US attorneys, but deep down is quite fond of them.
The anatomies listed on the left are where you should start.