Keywords are the most important SEO element for each and every search engine, as these are the words for which the search strings are matched. Choosing the right keywords is therefore one of the most important and the crucial step of every SEO campaign. If you fail on this step, then the road ahead will be very bumpy and you will be only wasting your time and efforts.
There are many tools available online, which let you know about the keywords. By using these tools and doing your own research you have to make the list of the final keywords, which you have to target and the most important thing which keywords suits well to your sites.