Hmmm, depends on what you skillsets you have right now.
1) Can you write (write articles, good english)?
2) Do you know have any design skills? (webdesign, graphic design, etc)
3) Do you have any sales/marketing background?
4) Do you have any problem working infront of a computer 8 hours a day?
5) Do you have an investment budget?
6) How urgent do you need to earn a stable income?
Depending on your answer, it will determine what options are suitable for your situation and how much and how fast you can succeed.
With affiliate marketing, you can create a blog for free to learn up the skillset you need and lateron when you've earned some money, to set up a real site with proper domain and hosting and seriously go all out.
With got a FAQ that will
guide newbies in earning money through us if you're interested.