Welcome to WorldWorks first official release "Castle Works" Vol # 01 1.You must first install Acrobat Reader at: http://www.adobe.com/products/acrobat/readstep2.html Adobe Acrobat is needed so that you can view the various materials of this file. 2. Open the folder named "START HERE" and double click the "Beginners Guide" 3. You can then access individual folders for each castle section to view and print the WorldWorks "Castle Works Vol # 01" Set.