Can someone help me with list of tools for doing keyword research for SEO & SEM?
Please read this post the best list of keyword research tool I have created so far http://seo-cpc-ppc.blogspot.in/2010/03/list-of-keyword-suggestion-tools.html.
1 or 2 links may not work this days. Most Preferred tool to use is Google Keyword Planner & recent addition is SEMrush. Hope this will going to help!
Keyword planner Long tail pro SEMrush
Pick 5 people who are your expected clients or your clients and ask them what will you search if you have to buy services like we offer.
No keyword search tool can give you better understanding than this.