The International Space Station is a complex place, with loads of gear packed into its 916 cubic meters of pressurized volume. SpaceRef has an assortment of detailed technical documents describing everything from basic operations to emergency procedures. For a general overview, see the excellent NASA ISS Reference Guide (pdf).
Why I won't be at my high school reunion. A math geek reminisces about the joys of high school. As another who has much-less-than-pleasant memories of those years, this struck a nerve.