What YouTube Ad type do you want to go for?
TrueView Ads
TrueView is a great way to get your message across. Common options include being able to skip pre-roll ads.
Sponsored Card Ads
YouTube sponsored videos are a great way to get your name out there. They integrate the company into an influencer's content but they also provide social endorsements.
Display Ads
YouTube display ads are just one of the many types placed on a video player. They're only available for desktop users, but you have options for size and format--image or animation.