Hi Eve, are you looking for sites to work as a freelance translator?  If that is the case, you can try https://gengo.com/ ; I have never used it but I know people who have. 

If you are looking to basically start a business, as a sole proprietor or something like that, this book and website associated with it has helped me a lot!  The $100 Startup, see site, http://100startup.com/

I hope I helped you with your question.

Yes, Elance.com is very good

I have had a wonderful experience working freelance. There are nifty websites that can help you---you just have to google for them. The following link may help you:

http://www.freshbooks.com/blog/2013/01/16/freelance-jobs/

However, I depend on the Universe (It is the best provider)