Keywords in the context of a website are usually taken to be the words that compose what are believed to be the most common search terms for your website or product type. Another way of putting it is the words that are most likely to be entered into a search engine that you would like your site to list highly for. Confused?
Allow me to present a simple example. If you have a particular product and a specific area in which you can provide it then they would be sensible keywords. If there is common terminology used in your area of expertise then that may be worth taking into consideration as a secondary term because so many of your rivals will be using it that to reach the top of the search engine positionings would take ages and cost a fortune. Good keywords have relevence and if possible isolate your corporate image in the marketplace.
Choosing targetted keywords and making them work for you is a job for someone that knows what they are doing. Unless of course you have a lot of time available to learn and practice, get it wrong and try again.
If you require more than the basic amount of search engine optimisation to be done then we will be happy to discuss your requirements with you. You have the choice of either a certain number of hours work for a one off fee or a continual tune up for a set fee per month. The second option works best but the choice is yours.