Unless you know someone across the office who’s going to give you links to your website from theirs, when it comes to “link-building” you’re going to have to write some effective emails. You’ve probably had those mass-produced, auto-generated emails which tell you how much you have in common with some site you’ve never heard of, and why you should swap links with them. That’s how not to do it. The way you should do it is outlined in The Perfect Link Request Email on the Hobo blog. It’s an altogether more laid-back, considered approach. It’ll take a long while to get significant numbers of links, but the hit rate will be good, and the links will be effective ones.