If you just finished university there should be some subset of people at the university who already know you in the context of tech (assuming tech was your major). Professors/administration either have projects or know plenty of people who do. Talk to everyone there you have rapport with.
This is where I'm at now. I developed quite a name for myself and my work while at university, and now six months after leaving I have more work than I can possibly do--almost without exception referrals from university contacts.
[1] I documented my experience here: http://tbbuck.com/winning-your-first-freelance-job-on-vworke...
We also pay 15% referral fees over the lifetime of clients, which our customers and friends like.
Generally people don't just jump into freelance though without any clients or big projects lined up. Perhaps finding a job first and networking/developing a portfolio to freelance later may be an easier route.
I'm sure if there's any startup people on HN that want a prototype whipped up quickly I can do that sort of thing, too.
Our aim is to help freelancers collaborate, manage their projects and reach out for help. It will have a Q&A app, a personalized job board + lead management.
2. Tell everyone you're available.
Major emphasis on HTML5 and all the latest buzzwords :)