how to enable youtube monetization?

How many subscribers do you need to get money from YouTube?

Chapter 1 -WRITING.

1.1 Blogging.
1.2 Website/Blog Monetization.
1.2.1 Sponsored posts.
1.2.2 Ebooks.
1.2.3 Online Courses.
1.2.4 Podcasts.
1.2.5 Pay-Per-View.
1.2.6 Pay-per-Click.
1.3 Revenue Sharing.
1.2.8 Freelancer writing.

When you reach 10,000 subscribers, you can expect $100 - $300 per sponsorship, you can expect $100+ from YouTube Ads (it depends on the number of views, length, country, currency, etc.).

Chapter -2 SELLING.

2.1 Affiliate Marketing.
2.2 Sell your own products.
2.2.1 Crafts & Arts.
2.2.2. Videos.
2.2.4. Music.
2.2.5. Stock Photography.
2.2.6. Domain Names.
2.2.7. Applications.
2.2.8. Websites.
2.2.9. Paintings.
2.2.10. Collectibles.

It's really hard to reach your first 100 and your first 1,000 subscribers.

Chapter -3 SOCIAL MEDIA.

3.1 Twitter.
3.2 Facebook.
3.3 Pinterest.
3.4 Youtube.

Chapter -4 RENTING.