Keyword should be in the URL, TITLE TAG, META DESCRIPTION, HEADER 1, 2, and 3 in the post, ALT TAG IN IMAGE, and should be used throughout the post for a keyword density of around 2.5%.
Keyword should be in Phoenix seo company the first and last sentence, and you should have at least one bold,italics, and underlined keyword through out the post. Post should be at least 400 words and should never be over 1000 (you can make a another post of page with that information and have something else that can rank/interlinking posts)
You should usually link to another related page on Phoenix seo company the web, (an authority on what you are writing on) and you don't have to give them you anchored text url.
SEOmoz is a great place for beginners to learn more about SEO.