Finally below the first 7 responses is one from 'lifehacker.com' and then one from YouTube. I usually go then to the YouTube answer because they are often helpful. Here is the YouTube for this question.
As I listened to this one I realized that it could be confusing or helpful depending on your prior knowledge and if you use a Mac or PC.
It does take patience to look through the sites and try things and then keep searching, but you are often able to find a solution this way. It works for me!
Specialized Search Engines
http://momondo.com - Travel
http://kayak.com - Travel
http://jewogle.com - a search for holidays returns Jewish holidays only!
http://seekfind.com - a Christian search engine Returned "Should Christians celebrate holidays" and "Are Christian Holidays Pagan in origin?" among others.
http://pipl.com - people search - search yourself and see what you find...