HP Photography Tutorial--Go through each of the tips and use the buttons to manipulate the pictures. Take note as to how different effects changes the look of the pictures. http://www.hp.com/united-states/consumer/digital_photography/tours/beginners/index.html
Top Ten Tips from Kodak http://www.kodak.com/eknec/PageQuerier.jhtml?pq-path=317/10032&pq-locale=en_US
Microsoft Photography Tips http://www.microsoft.com/windowsxp/using/digitalphotography/learnmore/composition.mspx