an excellent video for finding keywords is called Dating Google. it shows a few things, I think the most important point there for the new comers to CJ is the way it shows how to pick the long tail keywords when either setting up your ppc ads or building your web pages. The site is http://www.youtube.com/watch?v=-ApWe8rW1NY and no, it is not mine and no there is no selling here just a good video about google search that I thought may help a few people. all the best.
it can help you to optimise your website and ppc campaigns and it requires nothing other than you to watch it and take note of the tips, as I said its not selling anything, no cost, just watch it.