SEO means Search Engine Optimization. It's all about boost the rank of any business who wants to get the top position in Google. By doing link building activities such as blog commenting, community participation, social bookmarking, local business listing, directory submission, guest posting, article submission, press release and other off site activities can help to increase the rank of any website easily. You really need to understand SEO at a basic level to get your site ranked in Google and ranked on the first page.