what you want are links from high PR sites,
although some people say that recip links dont work well nowadays,
at the beginning you might want to target words/phrases with little competition to start generating a little bit of SE traffic, and as that grows, move on to bigger and harder terms...
it really comes down to how much time you have searching out link exchanges, how unique your site and how much researhc you do..
check out seochat.com and webmasterworld.com
hope that helps... and have a merry xmas, im out now
