This is the Psychological Soar Tutorial version 12.0 for the web and Soartk 7.0.5 3 Feb 98: RMY R.M.Young@herts.ac.uk To use the tutorial, open up pst-tutorial.html with a HTML browser such as Netscape or Mosaic (e.g., netscape pst-tutorial.html). You will also need a running Soar to do the code based exercises. The Tcl/Tk displays make many things much easier. They work under Unix and the Mac. They are intended to be easy to install. If they aren't, contact us and we'll try to fix it. Version 12 to go with PST.v12, for UH tutorial 26 Jan 98. Version 11 for the web, class, and Soar 7.0.4, released 1 Feb 1997 or later. Version 10 for the web, and Soar 7.0.4, released 2 November 1996. Version 9 for the web, released 23 April1996. Version 8 for the web, renumbered to be synchronous with the old PST's. Version 2 for Programmable cognitive architectures, Jan 96. Version 1 (for the web) for EurosSoar, Nov 96.