6 ways to monetize a youtube channel beyond youtube ads:
Affiliate marketing
Make content about a product, link it in the description and you can earn a commission on every product sold.
Sponsorships
Brand sponsorships can be very lucrative.
Google Brandconnect is a website which connect brands with YouTubers.
Digital products
Also digital products can be very lucrative in the educational space.
One of my clients makes about 1300 dollars a day with a video training.
Other ideas are photoshop brushes, cheatsheets and ebooks.
Merchandise
Sell your own tshirts and mugs
Crowd funding
With websites like patreon or youtube membership
Coaching
Use your skills to help people
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