1. For me the best idea to monetize your YouTube Channel, is to meet the criteria for applying to the YouTube Partner Program. That means, that your YouTube Channel, must had over 1k subscribers and 4k hours of watching in the last year,
2. YouTube Help Center
Code:
https://support.google.com/youtube/
3. in the search box from the link above search for "YouTube Partner Program guidelines"
Monetize with ads, but diversify your income. Sponsorships, affiliate marketing, and merch sales can add some sweet dollars. Build a community – respond to comments, engage on social media. Oh, and don't forget the thumbnail game – make it pop.