There are many ways to make money online and you have just gotten quite a few here already and therefore I won't add anymore as the ones you gat here are more than enough.
However, I will encourage you to ask yourself if you are really ready and got what it takes because it can be tricky starting making the money.
You see making money online is easy, but easier said than done, and many people are not making it, why? because as people, we like complicating things.
My advise is, do one thing and focus on it and be a good learner and apply what you learn and avoid learning too much at a time as you will get overwhelmed and end up doing nothing, which really is the major cause of failure.
That's just my 2 cents worth, hope it will help and good luck as they say :-)