There are many types of passive filters. Can't believe a Google of "Passive filters" didn't get you any hits you could use. Try Wikipedia for a start. If you need more specific information, then we need to know more about your requirements.
There's some schematic diagrams of two passive filters in this thread (Low-Pass and High-Pass). If you find the diagram for a passive low-pass filter, then a high-pass is exactly the opposite in terms of component orientation.