The full set of ADINA Manuals can be accessed from the AUI Help menu or directly from the doc installation directory (e.g. C:\Program Files\Bentley\Adina\9.10\docs)

The manuals are a set of linked pdf files. By default, Adobe Acrobat Reader has enhanced security turned on, so each time you try to open one of the linked manuals you will received a warning:

To allow linked manuals to be opened without any warning do the following:

1. In Acrobat Reader, choose Edit->Preferences, choose Security (Enhanced).
2. In the Sandbox Protections box, uncheck “Enable Protected Mode at startup” 
3. Click Yes to the warning dialog
4. Restart Acrobat Reader.