If you did not find the help file for blend modes in Elements, here it is:
http://help.adobe.com/en_US/PhotoshopEl ... -7f93.html
My prefered tutorial is from Ron Bigelow:
http://www.ronbigelow.com/articles/blend1/blend1.htm
http://help.adobe.com/en_US/PhotoshopEl ... -7f93.html
My prefered tutorial is from Ron Bigelow:
http://www.ronbigelow.com/articles/blend1/blend1.htm