Two Google search strings have come to light that enable quick
searching of the current documentation (full documentation + the book)
and the user archive forums (all forums, including student and
mathgroup.
example documentation search which finds information on the function
NVariationalBound:
nvariationalbound site:documents.wolfram.com inurl:mathematica
example user forums search for assertion of assumptions:
assumptions site:forums.wolfram.com
This information has been cross posted to the Mathematica Users Wiki:
http://www.mma-users.org/mediawiki/index.php/Mathematica_help_page
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Chris Chiasson
Kettering University
Mechanical Engineering
Graduate Student
1 810 265 3161