Before you start just adding keywords to help with your website's organic rankings, make sure you are using the keyword that is right for you. Some people just look at what is the most searched terms and try to incorporate those into their site, but that isn't the right approach.
You want to select the keywords that have search volume, that aren't overly competitive, and relevant to your business. (I will say the last part again.... relevant to your business) - You want the right traffic not just traffic.
Start by creating categories of the services you provide and research similar keywords to see what the best keyword is for you in each category. You may want to optimize for 2 or 3 in each....
Here are a few Keyword tools:
https://adwords.google.com/o/Target...000&ideaRequestType=KEYWORD_IDEAS#search.none
Google Insights for Search
Quick tips:
People type in problems they are trying to solve into search engines. Think about the searcher's intent. A detailer thinks "headlight restoration", a Google searcher thinks "fix cloudy headlights"
Create an excel spreadsheet to help refine your keywords include data on search volume, your current rank for that keyword and the page URL that is ranking. Using excel makes it easy to filter columns and sort the data.
Include geographical terms like City / State / County or Region / zip code
Once you have choosen the words you think are most appropriate think about how and where you can incorporate them into your website. Does your website's architecture have the ability to support your keywords or is new content needed or a new structure needed.
The exercise of page matching is to find a home for each keyword (or grouping of keywords) for a page within your site. Many site's I have viewed list all their services on a single page. It becomes difficult to optimize the same page for Head light restoration as it is for your Paint correction service.
Once you find a home for each keyword(s) - start to incorporate that keyword within that page's content, HTML elements [Title tag, Meta Description, Headline tags, Alt image Tags, etc] - if you can't do this ask your webmaster, but please make it easy for them by providing them all the info.
I hope I have helped and not confused anyone.