I am going to attempt to post different places that you can go looking for work, if you are looking for extra income. Not all of them are writing sites, so if writing is not your thing, some of these sites are worth checking out.
This is the first site that I started working on. It is a bidding site, so you will need some patience when you decide to head over here, as you will be competing with many others. I have found that many of the people on there offering ongoing work are typically writing teams, looking to add others to their team, which is not necessarily a bad thing. I have not found high paying work, but if you are just starting out, it can be a good place to get some work under your belt. Be aware that there are fees when you accept a job, but many people communicate outside the site to avoid that.
This site has more than just writing, so it is worth a check if you have other skills.