you can try cpalead.com for CPA surveys, referrs and much more. You may also try cj.com, adbrite etc.
cpalead is 100% the best and easiest way to get going, pm me if you want to sign up with my aff link and i'll try to get you some help!
There are thousands way to earn money, the best way is depend on individual. Google might tell you "PPC advertising", clickbank might tell you "affiliate program"
Affiliate program can help you to earn money online but you must to know first on how does this works before you try to avoid failure.
The best way to make money online is learn from experience. Go for clickbank products. See which are having good traffic and create their reviews and rank for them. Clickbank is far most the best one and more reputed. Also no problem like adsense of losing account. Hope this helps. If you want any help just pm me.
Why not Adsense ? It's a great way to make money and if you purchase sites that are already earning adsense money you can build these sites up further and have a fully generating adsense revenue in less than 3 months. Check out the auction in my sig for sites that generate adsense revenue and are being sold for cheap.
I think clickbank is one of the best source of online income because you can get 75% commission from sales
there are many ways to earn online .......... i think affiliate marketing is the best way to make a start
I'm not sure if anyone mentioned this yet but Clickbank is another popular choice for affiliate products. I would definitely check them out.