Hello everyone, I work on a site where you can do almost all kind of jobs. But there are posted every hour especially PHP and web developments jobs, and if you know well php and mysql (or other programming languages as well), you can increase very much your income. My first project there was very simple, just to categorize some social media network messages, and I've done it with a little script written by me. The employers communicate very well with you, you can ask everything you want.
I've found the site through a freelancer blog, I've applied the start advices of this guy and I won very fast my first project. Here is the blog post that I'm talking about:
http://work-from-home-advices.blogspot. ... ncing.html
Give it a try, is free to join on that freelancer site!