There is an 87 page manual in PDF (Portable Document Format) on DateBk4. You can download this manual from a link on the DateBk4 web page:
http://www.PimlicoSoftware.com/datebk4.htm

The manual is approximately 1Mb and provides detailed information on all aspects of DateBk4. You can read it and print it with Adobe Acrobat Reader, V-3.0 or V-4.0. If you do not have Acrobat reader, you can download it for free from www.adobe.com

There is also extensive help within the program itself - just tap on the little 'i' in the white circle at the end of most title bars.