Getting right keyword for your site is the right option for success. so beware of selecting keywords. you can use sem rush, google keyword tools for it.
Hello go for google you can get all those thing : better keyword search tool 'google adwords' and 'market samurai' you can try....
What do you want to know about Keyword research ? Keyword research is simply the way to select the keywords for a web page according to the theme of the web page.
look for buying keywords that are commercial in nature and not informative and based on a product or service have a CPC above a dollar, less then 100 k in competition , and based on a product or service, are at least 2-3 keywords in length
Google adwords is a great programme, although google charge you for this but it brings great results.
Google adwords is best tool for search keyword. Just search your sites theme related keyword and search how much traffic at that keyword. Always use that keywords which has low no of compitators and high no of searches.
Keyword Research is building a list of keywords for you to use on your website and eventually rank for in search results.