Following are the various ways:
1)Blogging- Here after registration we can publish a article of our choice. Here we need to create a quality content regularly.As the blogs gets more and more clicks we can apply for adsence,Google adds.
2)Afffilate marketing-Here we can help to sell a product by generating links,and we get some percentage from that profit.
3)You Tube-Here we have to creat a quality video with a good content that can influence people.As more and more people visits a channel then apply for adsence.
4) Instagram-Here we can generate short stories or short videos,the more views it's gets the more chances to generate money.
5) Whatsapp and Facebook groups-Create a group,put a product with details,connect with others, generate link and earn.
6)Facebook page-Create a page,Enlist the products with details,generate link and earn.
7)Podcast-Here one can creat a audio content.
Hope this information will help many more to earn online.