1. Google Adsense: After getting monetization that youtuber can show ads from Google Adsense and get payment on the basis of watch time and click.
2. Sponsored videos: In Google Adsense, Google cut a huge margin so sponsors started direct contacting youtubers and pay to tell people about their product personally at rate according to performance of that channel on YouTube.
3. Membership: popular youtubers make their group on YouTube where members can do live video, chat and many things at a price set by youtuber.
4. Merchandise: In this youtubers can sell things having promotion of there channel or things which youtubers want like T-shirts.
5. Affiliate marketing: Youtubers can sell any product by direct link they from any online store and if someone shop using their refferal link they will get commission.
6. Social media marketing: as they get very famous though there their youtube channel, they get social media fame also due to their fan following. On their page sometime they promote sponcered things and get money from sponcers.
