The Link Building Cookbook has some pretty good tips. I'd dig into that for starters, and then automate or outsource.
links on good directories or bogs with many pages crawled .... like findturtle.com having more than 4 k pages indexed in G ... there are many other ways too like forums, link exchange, article submission, directory submission and much more
I'm PR 5 with 15 backlinks. It is all from three pages on my site, those pages are starting to give PR 5 to pages with no PR. The way I got it is probably not possible for most DP'ers - I wrote an awesome piece of software and open sourced it. I got a link from a PR 7 site too.
work hard on your content, if you cant than pay some one to write for you. when you have a site with good content link will add up theme self.
99% of comments like this are BS. Why? Because any real site owner with high PR would be proud to show it off, not say 'Look at me I'm the daddy' and not bother give the url. So, are you going to show it off like a real webmaster?
To get yo started download digiXmas and Article Post Robot. Those two ways are going to be your fastest ways to build links. Good Luck