The tutorial (http://www.adventuregamestudio.co.uk/manual/StartingOff.htm) pages don't work. They all 404.
How did you end up there? Whatever link you used must be out of date: http://www.adventuregamestudio.co.uk/acintro.htm
If you need to you can access what I assume are the exact same pages through the editor. Go to Help>Contents then open 'Tutorial' and click 'Starting off'.