Sitepoint is giving away this free ebook "The Principles of Successful Freelancing" on its site.
All you need to do is to follow them at @sitepointdotcom on twitter.
Even if you are already following, you can just allow them to verify and get the ebook.
Best, even otherwise just provide your e-mail and they provide you the details to download.
So, be fast as this offer doesn't last more than 10 days.