Walid M. I. Hassan

This course tells about point group symmetry

here are some useful websites

 All molecule point group is 

http://cccbdb.nist.gov/pglist.asp

some examples for point group molecules

http://newton.ex.ac.uk/research/qsystems/people/goss/symmetry/Molecules.html

All point gtoup symmetry elements

http://www.webqc.org/symmetry.php

You can use the following website convert reducible representation to irreducible representation

http://assign3.chem.usyd.edu.au/spectroscopy/reductionOperator.php?res=high

The lectures in pdf format are available here