as we all know that Google is one of the biggest and most popular search engine and more an more people use this to optimize their own websites. only you make a clear understanding of it, you can master the methods well. therefore, if you can make your sites on the first page after seraching with Google, you can get more web traffic to sites. in order to fulfill it , we should make a backlinks building system in advance. also you can go some professional forums on web optimization. it is a good choice.