Effective SEO Use Of Keywords

Focus on Good Keyword Phrases:
When it comes to search engine marketing or selecting keywords for your website it is better to produce terms or key phrase rather than words.  It is an easy problem to over think the most basic keywords for your website, and forget the basic concept "What products or services do you sell?"  When selecting keywords write them down, and then connect them together to form phrases your site is built around. Single keywords are extremely hard to rank, do not have a good ROI, and should not be part of your early SEO work.

Use Google's Adwords Keyword Tool:
This is a neat tool in keyword discovery and Traffic Estimator. Be sure and look to the left you will see "Broad", "Phrase Match", and "Exact Match".
"Broad" is the sum of the search volumes for the keyword idea, related grammatical forms, synonyms and related words
"Phrase match" The sum of the search volumes for all terms that include that whole phrase
"Exact match" The search volume for that keyword idea or term.
Get Search Traffic Variations from Google search. This is a very useful tool for a lot of different applications.

Building Your Content Around Keywords:
The aim is to incorporate your chosen keywords into your copy smoothly and seamlessly, in such a way that they become visible to the search engines such as Google, while also enhancing your content. Keywords can be effectively added to your page title, header tags (h1 h2), images (alt tags), anchor text, Bold/italic text, body text, and urls and individual file names. Remember this keyword's should be present but density is not important. Include the keyword but make the writing sound and read natural.