If you want us to recommend me on seo guideline, there are plenty already. You can take a look around and would seeing a tons of them. If you do really wanted a guideline, here is some good to read Ten SEO Guidelines SEOmoz | Beginner's Guide to Search Engine Optimization
SEO, is very important in Internet business, many companies are hiring SEO experts to SEO for their sites. Though it is not instant, but maybe several months ago, it will drive much more traffic your site. For most bloggers, I recommend that you learn some basic knowledge of SEO, at least make sure your site not be penalized or even banned.