Tournament Directors can download free swiss pairing software from the CFC website. Note that this software is also capable of doing round robin tournaments as well.
To get a free copy of a very good teaching manual, download this pdf file, written by IM Tom O'Donnell. Note that the information at the beginning of the manual is dated for example, the CFC is no longer in Ottawa and the prices of chess equipment has changed over the years. Otherwise an excellent tool.