It looks like you're new here. If you want to get involved, click one of these buttons!
Here are the slides of another talk I'll on networks I'll be giving at Oxford:
This is an intro to the stochastic Petri net stuff I've been banging on about for years. It should be self-contained if you read enough of the overview talk to be unafraid of the phrase "symmetric monoidal category" (or if you just ignore it).
As usual, I really welcome comments, corrections, questions and complaints!