Google is the world's largest and renowned search engine incorporating about 66.8%(approximately) of market share. It was introduced in 1998 by students of Stanford University students Sergey Brin and Larry Page. The unique algorithmic ranking system is considered as its key of success. Besides Google Mail services there are various worthy and useful tools are being offered absolutely free which include Blogger, Feedburner, YouTube, Google Plus, Adsense, Webmaster Tools, Adword, Analytics and many more.