Investors looking for help to spot buying and selling opportunities may find some pointers from the following websites:

www.investorhome.com is organised into broad themes like asset allocation, data mining, and the efficient market hypothesis and is considered an outstanding resource of information for beginning and intermediate investors.

www.barra.com is an investment consulting firm with a rich analytical tradition. If you leave all the search fields blank and simply click on the "submit" button, you'll get a complete list of dozens of scholarly articles which may prove useful.