Search engine optimization (SEO) and Search engine marketing (SEM) are two vital components for internet commercial success. How you site ranks with Google primarily, but with other search engines as well, will determine how many visitors your site gets and, ultimately, how much business you generate. This compilation looks at SEO from all angles introducing beginners to the basics of the concept and the simple things you can do to make sure your site is optimized and then going on to specific areas such as keywords, links, paid search and content management providing practical, relevant and helpful tips on all these issues. If you have a commercial website – or are planning one – this is an essential piece of start-up information.