Best ways to make money online are:

1. Learn to search Google effectively - so that you won't end up in a spammy scam website
2. Don't go for "Mom earns $5000 per month", "Google Pays me "$444 per hour" advertisements.
   
3. Start a blog (it may be WordPress/blogger (free)) and focus on a single niche (bunch of topics related to same subject). Write those articles, which are never published anywhere! (imp) > Apply for Google Adsense after you start to get  1k visits/day or it is better to apply after 5-6 months.
   
4. You can also start microniche websites with rare keywords (highly searched and low competition) and earn good money by affiliates or adsense! (This need some skill sets!)
   
5. Don't join any network marketing type of business online
6. Don't join any survey companies, Don't join any pay per download companies (all re bulls***!)
   
7. Write for other blogs - write from your heart and with more research on the core topic (experience will earn you more per article!)
8. Join some forums and Q&A websites and increase knowledge - There are some Q&A sites, where you can earn some decent income for posting quality answers along with increasing the writing skills.
9. If you are good at creating YouTube videos, you can earn some good income from those activities.
10. Freelancing could get you decent income from services like freelancer, elancer, fiverr etc.
    
11. Selling third party products on eBay and Amazon could be helpful. I was making some good income, but I don't prefer it because it gives you more headache to manage and maintain records and keep up with the competition.
12. Clickbank can turn you into a millionaire, if you focus on any single product and build an unique and high end website/blog around that product's niche. (I have earned over 5 lakhs INR from Clickbank so far in 1 year).