Keyword research is the first step in succeeding with SEO. There are many tools you can purchase for this, or you can simply go to Google AdWords and use their keyword tool. Input words and see how they rank in global and local search markets. You can also look at other existing web sites and see which terms and phrases are searched to lead people back to that particular site.Keyword research is a practice used by search engine optimization professionals to find and research actual search terms people enter into the search engines when conducting a search. Search engine optimization professionals research keywords in order to achieve better rankings in search engines. This practice is also useful in determining what topics are currently being searched at a higher rate then others. This is how professional Internet Marketers determine which niche they want to promote.Once a niche keyword is found, it is expanded upon to find similar keywords. The process is usually aided by keyword suggestion tools, which offer thesaurus and alternate keyword suggestion functionality. Most of the time the various search engines provide their own keyword suggestion tools as well which also include the number of searches made for each of those keywords. This information is then used in order to select the correct keyword depending on the SEO goals of the website.