downloading and running
http://www.openfoam.org/download/source.php
example codes
http://www.foamcfd.org/Nabla/guides/ProgrammersGuidech3.html
Other useful guides to vtk and openfoam
http://www.tfd.chalmers.se/~hani/kurser/OS_CFD_2009/
http://www.openfoam.org/docs/user/cavity.php#x5-50002.1.1
http://www.datawright.com.au/access_resources/access_docmd.openform_arguments.htm
http://www.foamcfd.org/Nabla/guides/ProgrammersGuidese14.html