Examples
- http://www.indiana.edu/~libinstr/Tutorial/index.htm
- http://library.austincc.edu/help/chem1411/beginning.htm
- http://www.unhm.unh.edu/chem.html
- http://www.columbia.edu/itc/chemistry/chem-tutorial/
- http://www.wooster.edu/library/sciref/Tutor/chemtutor/ChemHome/ChemHome.html