Thanks for the resources. I did not know that Google had a tool for this.
I have a few questions. How important is this A/B split testing thing? Is it an essential thing to do? How many companies does these experiments in their websites?
Yes, A/B split testing is very essential. Awareness level is very low currently regarding these tools but the industry is ripe for change - expect these tools to become as mainstream as web analytics tools in near future.