One way link building requires the best keywords if you want to place well on the search engines. Fortunately, and because of the evolving nature of the internet you can get just about everything you need on the internet for free, one way or the other. Keyword research is no exception and this is how you find those keywords for free!

www.google.co.uk - Always the best place to start. A good way to use Google for keyword research is to go here: https://adwords.google.com/select/KeywordToolExternal.

This is a tool that Google has created specifically for people to use in their adwords campaigns but, you can use it very effectively for your own purposes. There is a considerable amount of information here.

http://freekeywords.wordtracker.com/keyword-suggestion-tool.html - Wordtracker is pretty much the industry standard for keyword research these days. It supplies through its database literally tens of thousands of keywords along with the detailed information for competition and visitor response for those words. With word tracker you have two options; free and subscription. The free tool is very good and should be used often.

But, do not ignore the paid service. You could subscribe but if you don't want to jump in feet first word tracker has allowed for a free week where you can test the service. I would advise that you do this for the simple reason that you can get out lots of free keywords in a week. Not to mention the fact that the free week comes with a series of video tutorials and a free Keyword Basics Course and this is always good to have.

http://tools.seobook.com/keyword-tools/seobook/ - SEO Book is all about keywords and search engine optimization. The developer of the site is a man by the name of Aaron Wall and he is one of those Internet gurus you hear about so often but don't let that put you off. I only mention this because he knows what he's doing and has provided a very valuable resource. The site is worth checking out; I use it myself all the time.

Your own Web sites statistics. Possibly you are not aware of the great resource you have there.

Quite aside from getting back links, if you want to place well on the search engines then you will need to pay some attention to your on page keyword optimization so you may also want to have a look at the Wordtracker video on the subject.

I would also strongly suggest that you have a look at the Wordtracker Academy - http://www.wordtracker.com/academy. There is a lot of very important information there and it is all free. Do not miss this, if you are serious about succeeding with your website it will be time well spent.