Below are the different possible ways listed Here
- Affiliate Marketing and CPA.
- Becoming YouTube Partner.
- Showing Intro Ads.
- Selling your Own Products.
- Reviews of Products.
- Selling Videos to Clients.
- Selling Links in Description.
- Getting Donations.
To make money from YouTube all you need to do is to make a high quality video and monetize those YouTube videos with various advertising networks.